English to Thai and Thai to English.
These are special dictionaries that cover the technical areas. Many of these words are not available from the normal dictionaries or translations.
A resource showing the use of "that/which", apostrophes, "minimal-minimum/optimal-optimum", "therefore/as such", defining and non defining relative clauses, "Em/En dashes",  and an ESL teachers perspective on styles. The Aus. gov. manual covers many things such as colons and punctuation marks etc. It also shows when to use capitals in directions such as south etc. The grammar and English usage is universally based on the English language.