Perhaps you should try some spelling variations:
dung mat » duong mat, dung dat, dung may
cham xuc » cam xuc, chat xuc, pham duc
te sach » toc sach
mat cua » ma cua, manh cua, mang cua
va dung » van dung, va duong, vat dung
sach ty » sach y, sach tu, sach thu
hieu vu » hieu va, hieu ve, hieu su
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, ma hoa, me hoi

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