Perhaps you should try some spelling variations:
thieu tang » nhieu tang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
tan thong » toan thong, tran thong, tao thong
cong sang » cong san, cong vang, cong bang
cong lang » cong vang, cong luong, cong quang
cong tan » cong tac, cong san, cong thanh
phan cau » phan dau, phan cac, phan tu

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 tang - thanh cong tan thong ((cong sang) or (cong lang)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tang - thanh cong tan thong ((cong sang) OR (cong lang)) phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tang - thanh cong tan thong ((cong sang) or (cong lang)) phan cau*.