Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
van hanh » ban hanh, van anh, van ban
thu ban » thu hang
nang xa » nang x, lang xa, nang ma
tu ban » te ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu ban) or (thu ban)) ky nang xa hoi. hieu van pham duc ((van hanh) OR (van thanh)) dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu ban) OR (thu ban)) ky nang xa hoi. hieu van pham duc ((van hanh) OR (van thanh)) dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu ban) or (thu ban)) ky nang xa hoi. hieu van pham duc ((van hanh) OR (van thanh)) dai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu ban) or (thu ban)) ky nang xa hoi. hieu van pham duc ((van hanh) OR (van thanh)) dai cua triet*.