Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
thuoc ban » thuoc tan, thuoc dang, thu ban
ban thanh » ban hanh, ban hang
thanh doi » thanh loi, thanh moi, thanh do
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
toc sac » toc sach, toc san, doc sach
nang xa » nang x, lang xa, nang ma
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sac) OR (hoc sach)) ky nang xa hoi. hieu van nam thuoc ban thanh doi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sac) OR (hoc sach)) ky nang xa hoi. hieu van nam thuoc ban thanh doi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((toc sac) OR (hoc sach)) ky nang xa hoi. hieu van nam thuoc ban thanh doi cua tre*.