Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
mot chieu » ho chieu
doi chieu » doc hieu, doi chi, ho chieu
anh quang » anh xquang, anh quan, nhanh quang
quang va » quang van, quan va, quang ma
va duong » van duong, va tuong, va huong
cong tan » cong tac, cong san, cong ty
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: ((mot chieu) or (doi chieu)) xanh - anh quang va duong ((cong thanh) or (cong tan)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doi chieu)) xanh - anh quang va duong ((cong thanh) OR (cong tan)) than cau.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doi chieu)) xanh - anh quang va duong ((cong thanh) or (cong tan)) than cau*.