Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
hanh doanh » hang doanh, chinh doanh, doanh doanh
chieu qua » hieu qua, khien qua, hieu cua
cua thong » cua thuong, cua khong, cua tong
hua khong » hoa khong, cua khong, hoac khong
thong van » trong van, thong va, thong quan
van han » van hanh, van phan, van nhan
han tai » hang tai, nhan tai, van tai

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 qua - hanh doanh ((cua thong) or (hua khong)) thong van han tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu qua - hanh doanh ((cua thong) OR (hua khong)) thong van han tai.
• Adding a wildcard symbol may retrieve word variants: theo chieu qua - hanh doanh ((cua thong) or (hua khong)) thong van han tai*.