Perhaps you should try some spelling variations:
nhanh tinh » nhanh thanh, nhan sinh
hanh trinh » canh tranh, hanh chinh
doc trinh » doc tinh, doi trinh, dong trinh
hoc trinh » hoc tinh, hoc sinh, hoc trong
chat dung » chan dung, chat luong, chat quang
dung cong » dung trong
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc trinh) or (hoc trinh)) tinh - ((nhanh tinh) or (hanh trinh)) chat dung cong ban than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc trinh) OR (hoc trinh)) tinh - ((nhanh tinh) OR (hanh trinh)) chat dung cong ban than cau*.