Perhaps you should try some spelling variations:
van thanh » van tuan
ban thanh » ban hanh, ban hang
cham xuc » cam xuc, chat xuc, cham soc
hoc sac » hoc sach, hoc cac, hoc mac
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
vai cua » hai cua, lai cua, bai cua
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sac ky nang ma hoi. hieu ve cham xuc ((van thanh) or (ban thanh)) ((vai cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sac ky nang ma hoi. hieu ve cham xuc ((van thanh) OR (ban thanh)) ((vai cua) OR (dai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: hoc sac ky nang ma hoi. hieu ve cham xuc ((van thanh) or (ban thanh)) ((vai cua) or (dai cua)) tre*.