Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
trinh chat » tinh chat, trinh luat, trinh han
chi thanh » chi nhanh, thi thanh, cho thanh
trinh ca » trinh cau, trinh cua, trinh cac
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan cac » nhan cach, phan dau, phan lap
che tac » che tao

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((che tac) or (chi thanh)) - hanh ((trinh ca) or (trinh chat)) thuong cong tan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((che tac) OR (chi thanh)) - hanh ((trinh ca) OR (trinh chat)) thuong cong tan phan cac.
• Adding a wildcard symbol may retrieve word variants: doi ((che tac) or (chi thanh)) - hanh ((trinh ca) or (trinh chat)) thuong cong tan phan cac*.