Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cua triet, dua tren
va nang » van nang, da nang, cam nang
cuu tre » cau tren, cau treo
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
va cam » va cham, va cac, va cao

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 dang xa hoi. hieu va cam xuc ((va hanh) or (va nang)) tai ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang xa hoi. hieu va cam xuc ((va hanh) OR (va nang)) tai ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang xa hoi. hieu va cam xuc ((va hanh) or (va nang)) tai ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang xa hoi. hieu va cam xuc ((va hanh) or (va nang)) tai ((cua tre) OR (cuu tre))*.