Perhaps you should try some spelling variations:
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
tinh kinh » trinh kinh, tinh ninh, tinh binh
doi tinh » doi trinh, hoi tinh, don tinh
tinh cua » trinh cua, sinh cua, tinh chat
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
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: doi tinh kinh - nhanh tinh cua cong ((cong ban) or (cong san)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi tinh kinh - nhanh tinh cua cong ((cong ban) OR (cong san)) than cau*.