Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
thanh tai » thanh hai, doanh tai, thanh san
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan, thuc day
buu tre » cuu tre

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang xa hoi. hieu van nam thuc va ((thanh tai) OR (thanh toan)) buu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu van nam thuc va ((thanh tai) OR (thanh toan)) buu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu van nam thuc va ((thanh tai) OR (thanh toan)) buu tre*.