Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, tu cach
hang di » hang doi, hang vi, hang dien
xuc van » duc van, luc van, xuc ban
hieu ve » hieu va, hieu van
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
nang o » nang co, nang ho, nang ro
ve cam » ve cham, ve cac, va cam
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: ((tu sach) or (te sach)) ky nang o hoi. hieu ve cam xuc van ((hanh vi) or (hang di)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang o hoi. hieu ve cam xuc van ((hanh vi) OR (hang di)) cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky nang o hoi. hieu ve cam xuc van ((hanh vi) or (hang di)) cua tre*.