Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van ban
lai cua » dai cua, hai cua, lai chau
van anh » van thanh, tuan anh, van minh
sach ty » sach y, sach thu, xach tay
hieu ve » hieu va, hieu van
sach tu » sach thu, cach tu, sach uu
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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) OR (sach tu)) nang o hoi. hieu ve cam xuc ((van hanh) or (van anh)) lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach tu)) nang o hoi. hieu ve cam xuc ((van hanh) OR (van anh)) lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) OR (sach tu)) nang o hoi. hieu ve cam xuc ((van hanh) or (van anh)) lai cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) OR (sach tu)) nang o hoi. hieu ve cam xuc ((van hanh) or (van anh)) lai cua tre*.