Perhaps you should try some spelling variations:
vat thanh » dat thanh, gat thanh, tat thanh
thanh vi » hanh vi, thanh va, thanh ve
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
hieu le » hieu ve, hieu he, hieu ly
na thuc » nam thuc, na thuoc, a thuc
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang x hoi. hieu le ((na thuc) or (va thuc)) vat thanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang x hoi. hieu le ((na thuc) OR (va thuc)) vat thanh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang x hoi. hieu le ((na thuc) or (va thuc)) vat thanh vi cua tu*.