Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
xa hanh » xa thanh, xa khanh, va hanh
mai hoi » mai khoi, dai hoi, lai hoi
sach ky » sach y, sach ty, sach kem
thu xa » thu xac, thu ha, thu xe
cua te » cua tu
va nam » van nam, ha nam, va nay
sac ky » cac ky, sai ky

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 ky) OR (sac ky)) sang ((mai hoi) or (xa hoi)). hieu va nam thu xa hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) sang ((mai hoi) OR (xa hoi)). hieu va nam thu xa hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sac ky)) sang ((mai hoi) or (xa hoi)). hieu va nam thu xa hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sac ky)) sang ((mai hoi) or (xa hoi)). hieu va nam thu xa hanh vai cua te*.