Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu
canh trinh » canh tranh, hanh trinh, canh tinh
nhung cong » dung cong, thong cong, hang cong
thi chieu » thi chien, thi hieu, thi hien
trinh van » trinh han, trinh quan, trinh toan
van nhung » van nhuong, va nhung, van hung
ho chieu » hoc thieu, doi chieu, mot chieu
cong tac » cong ty
tac gian » tac gia, tac giai, tac giam
gian cam » gian cham, gian cac, gia cam

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) or (((theo chieu) OR (thi chieu)))) tinh - canh trinh van nhung cong tac gian cam~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (((theo chieu) OR (thi chieu)))) tinh - canh trinh van nhung cong tac gian cam.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (((theo chieu) OR (thi chieu)))) tinh - canh trinh van nhung cong tac gian cam".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (((theo chieu) OR (thi chieu)))) tinh - canh trinh van nhung cong tac gian cam*.