Perhaps you should try some spelling variations:
van pham » san pham, van phan, van phat
hanh vai » hanh vi, hanh va, hanh tai
sach ty » sach tu, sach thu, xach tay
xang xa » lang xa, mang xa, ang xa
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cua tu » cua tuc, cua su, cua cu

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 ty) OR (sach y)) xang xa hoi. hieu ((van pham) or (va cham)) duc va hanh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) xang xa hoi. hieu ((van pham) OR (va cham)) duc va hanh vai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach y)) xang xa hoi. hieu ((van pham) or (va cham)) duc va hanh vai cua tu".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach y)) xang xa hoi. hieu ((van pham) or (va cham)) duc va hanh vai cua tu*.