Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh tran » hanh trang, thanh tran, hanh tram
van thong » van thuong, van phong, va thong
manh tuan » manh toan, minh tuan, van tuan
chi hanh » chi nhanh, chi thanh, thi hanh
tran van » luan van
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 tran van thong cong ((manh tuan) or (anh tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi hanh - hanh tran van thong cong ((manh tuan) OR (anh tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: doi chi hanh - hanh tran van thong cong ((manh tuan) or (anh tuan)) cau*.