Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
toc sach » hoc sach, doc sach, thuoc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, tuc va, luc va
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) OR (toc sach)) ky nang xa hoi. ((hieu ve) OR (hieu va)) cam xuc va hanh vi cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (toc sach)) ky nang xa hoi. ((hieu ve) OR (hieu va)) cam xuc va hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (toc sach)) ky nang xa hoi. ((hieu ve) OR (hieu va)) cam xuc va hanh vi cuu tre*.