Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
trung hoc » trung quoc
ho chinh » hoc chinh, cho chinh, hoa chinh
cong dan » cong san, cong tan, huong dan
tang ha » lang ha, trung ha, tang van
tang ma » mang may, tang van
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chinh sach - hanh ((((tang ha) or (trung hoc))) or (tang ma)) thong cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chinh sach - hanh ((((tang ha) OR (trung hoc))) OR (tang ma)) thong cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: ho chinh sach - hanh ((((tang ha) or (trung hoc))) or (tang ma)) thong cong dan van ban*.