Perhaps you should try some spelling variations:
hieu vat » nhieu vat, hieu va, hieu van
ban hanh » ban hang
ky dang » ky danh
vat hau » van hau, hat chau, vat chat
hau loc » huu loc, phau hoc
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
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: tu cac ((ky dang) or (ky nang)) xa hoi. hieu vat hau loc ((ban hanh) or (va danh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ((ky dang) OR (ky nang)) xa hoi. hieu vat hau loc ((ban hanh) OR (va danh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu cac ((ky dang) or (ky nang)) xa hoi. hieu vat hau loc ((ban hanh) or (va danh)) vi cua tre*.