Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
trong vat » trong van, trong va, trong dat
dung cong » dung trong
thanh cau » thanh chau, nhanh cau, thanh ca
thanh mau » hanh mau, thanh san, thanh hai
vat dung » van dung, va dung, viet dung
cong san » cong tac

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 - thanh trong vat dung cong san ((thanh cau) or (thanh mau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh trong vat dung cong san ((thanh cau) OR (thanh mau))*.