Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
tang cua » mang cua, tang luan, thong cua
hang cua » mang cua, hang ca, huong cua
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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 - hanh ((tang cua) or (hang cua)) thong cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh ((tang cua) OR (hang cua)) thong cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh ((tang cua) or (hang cua)) thong cong tac toan cao*.