Perhaps you should try some spelling variations:
quan thanh » ban thanh
hanh tranh » canh tranh, hanh trinh, hanh trang
thong cong » trong cong, tong cong, thong thong
van thanh » ban thanh, van tuan
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
cong tan » cong tac, cong san, cong thanh
toan cao » toan tap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((quan thanh) or (van thanh)) - hanh tranh cua thong cong tan ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((quan thanh) OR (van thanh)) - hanh tranh cua thong cong tan ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc ((quan thanh) or (van thanh)) - hanh tranh cua thong cong tan ((toan cao) or (toan ban))*.