Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
ky tang » ky dang, kho tang, ky trong
van cam » van nam, van lam, van cau
cam duc » cam xuc, cao duc, pham duc
duc van » duc va, duc tan, duc manh
doi cua » dai cua, hoi cua
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ((ky tang) or (ky nang)) xa hoi. hieu van cam duc van thanh ((vi cua) or (doi cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ky tang) OR (ky nang)) xa hoi. hieu van cam duc van thanh ((vi cua) OR (doi cua)) te.
• Adding a wildcard symbol may retrieve word variants: toc sach ((ky tang) or (ky nang)) xa hoi. hieu van cam duc van thanh ((vi cua) or (doi cua)) te*.