Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
hau loc » huu loc, phau hoc
cau loc » cau hoc, cau luc, cau long
sach va » sach xa, sach ha, sach dao
cua tre » cua te, cuu tre, cua triet
sach v » sach y, sach 2, sach vay

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat ((sach v) OR (sach va)) nang x ho. hieu ve ((cau loc) or (hau loc)) va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach v) OR (sach va)) nang x ho. hieu ve ((cau loc) OR (hau loc)) va hanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((sach v) OR (sach va)) nang x ho. hieu ve ((cau loc) or (hau loc)) va hanh vai cua tre*".