Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
canh trinh » canh tranh, hanh trinh, canh tinh
theo lieu » theo chieu, theo yeu, thi lieu
trinh vat » trinh van, trinh luat, sinh vat
vat thong » va thong, vat trong, mat thong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo lieu) or (theo tieu)) tinh - canh trinh vat thong cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo lieu) OR (theo tieu)) tinh - canh trinh vat thong cong tan toan cau.
• Adding a wildcard symbol may retrieve word variants: ((theo lieu) or (theo tieu)) tinh - canh trinh vat thong cong tan toan cau*.