Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
thong cong » trong cong, tong cong, thong thong
trinh cua » tinh cua, trinh luat, trinh luan
theo kha » theo phap, thao khoa, theo chu
kha nang » phap nang, ky nang, ki nang
cong dan » cong san, cong tan, huong dan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo kha nang - hanh ((trinh cua) or (trinh quan)) thong cong dan ((toan ban) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo kha nang - hanh ((trinh cua) OR (trinh quan)) thong cong dan ((toan ban) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo kha nang - hanh ((trinh cua) or (trinh quan)) thong cong dan ((toan ban) or (toan tap))*.