Perhaps you should try some spelling variations:
bat thanh » ban thanh, bac thanh, dat thanh
hieu van » hieu va, thien van, lieu va
thanh te » thanh ve, thanh de, thanh le
luat bat » luat dat, luat bao, luat dan
hau luat » thau luat, huu luat, phap luat
van hau » van ha, van hai, van dau
tu sach » thu sach, te sach, tu cach
van hoe » van hoa, van hoc, van hieu
van hoi » van hoa, van hoc, van loi
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
te cua » tue cua, le cua, de cua

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 (su sach)) ky nang ((van hoi) OR (van hoe)). hieu van hau luat bat thanh te cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang ((van hoi) OR (van hoe)). hieu van hau luat bat thanh te cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ky nang ((van hoi) OR (van hoe)). hieu van hau luat bat thanh te cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang ((van hoi) OR (van hoe)). hieu van hau luat bat thanh te cua tre*.