Perhaps you should try some spelling variations:
tinh vai » tinh va, tinh hai, tinh bai
su sach » so sach, vu sach
ky tang » ky dang, kho tang, ky trong
hieu ve » hieu va, hieu van
va tinh » may tinh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
ve coc » ve cuoc, ve cac, ve co
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ky tang) OR (ky nang)) xa hoi. hieu ve coc luc va tinh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky tang) OR (ky nang)) xa hoi. hieu ve coc luc va tinh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky tang) OR (ky nang)) xa hoi. hieu ve coc luc va tinh vai cua tre*.