Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
nhung cong » dung cong, thong cong, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
trung ha » trung hoc, trung tam, trung cap
trang va » tran van
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - thanh ((trung ha) or (((trang va) OR (hang va)))) nhung cong tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh ((trung ha) OR (((trang va) OR (hang va)))) nhung cong tac than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh ((trung ha) or (((trang va) OR (hang va)))) nhung cong tac than cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh ((trung ha) or (((trang va) OR (hang va)))) nhung cong tac than cau*.