Perhaps you should try some spelling variations:
thanh cham » thanh pham, thanh cha, hanh cham
thanh chau » thanh cha, thanh chu, thanh hai
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh tran » hanh trang, thanh tran, hanh tram
van trong » van truong, vang trong, ban trong
tran van » luan van
cong san » cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - hanh tran van trong cong san ((thanh chau) or (thanh cham))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh tran van trong cong san ((thanh chau) OR (thanh cham)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh tran van trong cong san ((thanh chau) or (thanh cham))*.