Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
thong ban » thong van, trong ban, thong bai
ban thanh » ban hanh, ban hang
thanh cau » thanh chau, thanh mau, nhanh cau
trang va » hang va
tran van » luan van

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 ((trang va) or (tran van)) thong thong ban thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh ((trang va) OR (tran van)) thong thong ban thanh cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh ((trang va) or (tran van)) thong thong ban thanh cau*.