Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
dao thai » dao thi, do thai, da thai
thai cuu » thai cua, tai cuc, thi cuc
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cac xuc » cam xuc, chat xuc, cac cuoc
cuu tre » cua tre, cau tren, cau treo
va dao » ca dao

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 ((cac xuc) OR (cac nuoc)) va dao thai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu van ((cac xuc) OR (cac nuoc)) va dao thai cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu van ((cac xuc) OR (cac nuoc)) va dao thai cuu tre*.