Perhaps you should try some spelling variations:
trinh tinh » trinh kinh, trinh tin, trinh dinh
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
doc trinh » doc tinh, doi trinh, hoc trinh
cong cong » cong dong, trong cong, dung cong
thanh lap » thanh san, phan lap, thanh hai
tinh cua » trinh cua, sinh cua, tinh chat
cong tan » cong tac, cong san, cong thanh
khan cap » khan ap, than cap, khoan cam

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 tinh - nhanh tinh cua cong cong tan ((thanh lap) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc trinh tinh - nhanh tinh cua cong cong tan ((thanh lap) OR (khan cap))*.