Perhaps you should try some spelling variations:
vat thanh » dat thanh, gat thanh, tat thanh
thuoc vat » thuc vat, thuoc va, thuoc bat
na thuoc » nha thuoc, nam thuoc, va thuoc
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu le » hieu ve, hieu he, hieu ly
vi cua » vai cua, di cua
le na » le nam, le va, le ta

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 xa hoi. hieu le na thuoc vat thanh ((vi cua) or (dai cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang xa hoi. hieu le na thuoc vat thanh ((vi cua) OR (dai cua)) tu.
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang xa hoi. hieu le na thuoc vat thanh ((vi cua) or (dai cua)) tu*.