Perhaps you should try some spelling variations:
luan phan » luan van, luan hoan
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
cham xuc » cam xuc, chat xuc, cham soc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van han » van hanh, van phan, van nhan
tai va » thai va, mai va, tri va
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang xa hoi. hieu van cham xuc ((van han) or (((van ban) or (luan phan)))) tai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu van cham xuc ((van han) OR (((van ban) OR (luan phan)))) tai va thiet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu van cham xuc ((van han) or (((van ban) or (luan phan)))) tai va thiet*.