Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
tinh tai » trinh tai, tinh thai, tinh hai
duy van » duy vat, dung van
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
va tinh » may tinh
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, ma hoa, me hoi
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ((ty xang) or (duy van)) ((ma hoi) or (xa hoi)). hieu ve cac xuc va tinh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((ty xang) OR (duy van)) ((ma hoi) OR (xa hoi)). hieu ve cac xuc va tinh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuat sach ((ty xang) or (duy van)) ((ma hoi) or (xa hoi)). hieu ve cac xuc va tinh tai cua tre*.