Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
toc sach » hoc sach, doc sach, thuoc sach
dua tren » dung tren
cham xuc » cam xuc, chat xuc, cham soc
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sach ty » sach y, sach tu, sach thu
va tinh » may tinh
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty nang ma hoi. hieu ve cham xuc ((va tinh) or (ban thanh)) lai ((dua tren) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang ma hoi. hieu ve cham xuc ((va tinh) OR (ban thanh)) lai ((dua tren) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang ma hoi. hieu ve cham xuc ((va tinh) or (ban thanh)) lai ((dua tren) or (cua tre))*.