Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
xang xa » mang xa, ang xa, dang xay
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty ((xang xa) OR (lang xa)) hoi. hieu ve cam ((duc va) or (tuc xa)) hanh vai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((xang xa) OR (lang xa)) hoi. hieu ve cam ((duc va) OR (tuc xa)) hanh vai cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((xang xa) OR (lang xa)) hoi. hieu ve cam ((duc va) or (tuc xa)) hanh vai cua vat".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((xang xa) OR (lang xa)) hoi. hieu ve cam ((duc va) or (tuc xa)) hanh vai cua vat*.