Perhaps you should try some spelling variations:
nguong dan » huong dan
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
manh hung » anh huong
hung cap » cung cap, hung ca, trung cap
cap bang » cao bang, can bang, lap bang
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban, toan tap

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 sang - manh hung cap bang ((cong tan) or (nguong dan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - manh hung cap bang ((cong tan) OR (nguong dan)) toan cao*.