Perhaps you should try some spelling variations:
trinh toan » tinh toan, thanh toan, trinh han
nhung cong » dung cong, thong cong, hang cong
mot chieu » doi chieu, ho chieu
trinh van » trinh han, trinh quan, dinh van
theo chu » theo chieu, cho chu, chao chu
cong san » cong tac
san chan » san chang, dan chan, san chay
chan cau » phan cau, can cau, chinh cau

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 (theo chu)) xanh - canh ((trinh van) or (trinh toan)) nhung cong san chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (theo chu)) xanh - canh ((trinh van) OR (trinh toan)) nhung cong san chan cau.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (theo chu)) xanh - canh ((trinh van) or (trinh toan)) nhung cong san chan cau*.