Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
gian quang » tran quang, gian lang, van quang
nang cong » nang song, dang cong, bang cong
gian dan » gian lang
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap
va nang » van nang, da nang, cam nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu xanh - ((gian quang) or (gian dan)) va nang cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - ((gian quang) OR (gian dan)) va nang cong tan toan cao*.