Perhaps you should try some spelling variations:
hoc thieu » hoc hien
trung tai » truong tai, trung tam, trong tai
trung dai » truong dai, truong dao, trung tam
tong cong » trong cong, cong cong, dung cong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (toc thieu)) sang - thanh ((trung tai) OR (trung dai)) tong cong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) sang - thanh ((trung tai) OR (trung dai)) tong cong dan than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (toc thieu)) sang - thanh ((trung tai) OR (trung dai)) tong cong dan than cap".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) sang - thanh ((trung tai) OR (trung dai)) tong cong dan than cap*.