Perhaps you should try some spelling variations:
trung thanh » truong thanh
trung tran » trung tuan, trung tam, hung tran
hoc thieu » toc thieu
dang 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 hien) or (hoc thieu)) anh - manh ((trung tran) OR (trung thanh)) dang cong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (hoc thieu)) anh - manh ((trung tran) OR (trung thanh)) dang cong dan than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hien) or (hoc thieu)) anh - manh ((trung tran) OR (trung thanh)) dang cong dan than cap".
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (hoc thieu)) anh - manh ((trung tran) OR (trung thanh)) dang cong dan than cap*.