Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
trinh viet » trinh vat
nhung dung » phuong dung, ung dung, thong dung
hoc thieu » toc thieu, hoc hien
ninh viet » sinh vien, anh viet
dung van » duong van, dung va, dang van
van hanh » van thanh, ban hanh, van anh
hanh cac » hang cac, hanh cat, hanh cham

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 viet) or (ninh viet)) nhung dung van hanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh ((trinh viet) OR (ninh viet)) nhung dung van hanh cac.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh ((trinh viet) or (ninh viet)) nhung dung van hanh cac*.