Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
trinh qua » trinh quan, trinh cua, trinh quang
manh cua » doanh cua, ban cua
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan tap » toan ban

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 - canh ((trinh qua) or (manh cua)) dung ((cong tan) or (cong san)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - canh ((trinh qua) OR (manh cua)) dung ((cong tan) OR (cong san)) toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - canh ((trinh qua) or (manh cua)) dung ((cong tan) or (cong san)) toan tap*.