Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
trinh cacu » trinh cau, trinh chu, trinh cam
trinh cac » trinh cau, trinh chat, trinh chao
chi tach » chiu trach, chiet tach, chi thanh
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan dau » phan tu, hang dau
doi chi » doi khi

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

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