Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
tranh van » tran van, trinh van, thanh van
chi hanh » chi nhanh, chi thanh, thi hanh
tranh va » trang va, trinh va, thanh va
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
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 hanh - hanh ((tranh va) OR (tranh van)) thong cong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi hanh - hanh ((tranh va) OR (tranh van)) thong cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: doi chi hanh - hanh ((tranh va) OR (tranh van)) thong cong dan toan cao*.