Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
trinh qua » trinh quan, trinh cua, trinh quang
toan ban » van ban
cong ly » cong ty, cong li, cong my
ly toan » le toan, ly hoan, ly tran

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 - hanh ((trinh qua) or (tinh quang)) thong cong ly toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh ((trinh qua) OR (tinh quang)) thong cong ly toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh ((trinh qua) or (tinh quang)) thong cong ly toan ban*.