Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
theo chu » theo chieu, cho chu, chao chu
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu
chu van » cuu van, chu han

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu van - ((hanh tranh) or (thanh trung)) va nhung cong tan ((than cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu van - ((hanh tranh) OR (thanh trung)) va nhung cong tan ((than cau) OR (phan cau)).
• Adding a wildcard symbol may retrieve word variants: theo chu van - ((hanh tranh) or (thanh trung)) va nhung cong tan ((than cau) or (phan cau))*.