Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
hieu ve » hieu va, hieu van
san cua » sang cua, ban cua, dan cua
su sach » vu sach
nang co » nang cao, nang doc, nang noi
ty nang » ky nang, ty xang, ty hang
so sach » so sanh, bo sach, co sach
cua tre » cua te, cuu tre, cua triet
co loi » co hoi
ve cam » ve cham, ve cac, va cam

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) or (so sach)) ty nang co loi. hieu ve cam xuc ((va thanh) OR (ban thanh)) san cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty nang co loi. hieu ve cam xuc ((va thanh) OR (ban thanh)) san cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ty nang co loi. hieu ve cam xuc ((va thanh) OR (ban thanh)) san cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ty nang co loi. hieu ve cam xuc ((va thanh) OR (ban thanh)) san cua tre*.