Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
trinh quan » tinh quang, trinh luat, trinh han
thong cong » trong cong, tong cong, thong thong
trinh qua » trinh cua, trinh quang, trinh luat
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: toc thieu sang - hanh ((trinh qua) or (trinh quan)) thong cong ly toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - hanh ((trinh qua) OR (trinh quan)) thong cong ly toan ban.
• Adding a wildcard symbol may retrieve word variants: toc thieu sang - hanh ((trinh qua) or (trinh quan)) thong cong ly toan ban*.