Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cam tuc » cam xuc, cam tu, nam thuc
vai cua » dai cua, hai cua, lai cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu van ((cam tuc) OR (am thuc)) van hanh vai cua vat~.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu van ((cam tuc) or (am thuc)) van hanh vai cua vat*.