Perhaps you should try some spelling variations:
hien khanh » hien hanh, dien khanh, thien thanh
hien nhanh » hien hanh, thien thanh, tien thanh
hanh tran » hanh trang, thanh tran, hanh tram
van trong » van truong, vang trong, ban trong
son thanh » ban thanh, van thanh
thanh cau » thanh chau, thanh mau, nhanh cau
tran van » luan van
cong son » cong san, cong so, dong son

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 khanh) or (hien nhanh)) - hanh tran van trong cong son thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien khanh) OR (hien nhanh)) - hanh tran van trong cong son thanh cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien khanh) or (hien nhanh)) - hanh tran van trong cong son thanh cau*.