Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
tac chinh » tai chinh, tich chinh, te chinh
chinh can » chinh ca, chinh ban, chinh cau
cong tac » cong ty
mang va » mang vua, hang va, dang va
bang va » hang va, ban va, trang va

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 ((mang va) or (bang va)) dung cong tac chinh can~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh ((mang va) OR (bang va)) dung cong tac chinh can.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh ((mang va) or (bang va)) dung cong tac chinh can*.