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
chi xanh » chi anh, chi danh, chi hanh
tran van » luan van
cong tan » cong tac, cong san, cong thanh
toan tap » toan ban
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 xanh - hanh tran van thong cong tan ((toan tap) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - hanh tran van thong cong tan ((toan tap) OR (van ban))*.