Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van hai » van ha, van chat, van phan
hai xu » thai xu, hai vu, dai xu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang xa hoi. hieu van hai xu ((van hanh) or (ban hanh)) dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. hieu van hai xu ((van hanh) OR (ban hanh)) dai cua triet.
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. hieu van hai xu ((van hanh) or (ban hanh)) dai cua triet*.