Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh luc » thanh luu, than luc, nhan luc
hieu van » hieu va, thien van, lieu va
thai cua » than cua, tai cuc, tri cua
tu sach » thu sach, su sach, te sach
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
luc va » duc va, tuc va, loc va

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 vu nang xa hoi. hieu van thanh luc va hanh ((dai cua) or (((thai cua) or (hoi chuc)))) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach vu nang xa hoi. hieu van thanh luc va hanh ((dai cua) OR (((thai cua) OR (hoi chuc)))) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach vu nang xa hoi. hieu van thanh luc va hanh ((dai cua) or (((thai cua) or (hoi chuc)))) tre*.