Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
thuc ban » thuoc ban, thuc dan, thu ban
toc sac » toc sach, hoc sach, 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 (toc san)) ky nang xa hoi. hieu van nam thuc ban thanh doi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sac) OR (toc san)) ky nang xa hoi. hieu van nam thuc ban thanh doi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((toc sac) OR (toc san)) ky nang xa hoi. hieu van nam thuc ban thanh doi cua tre*.