Perhaps you should try some spelling variations:
hieu quan » lieu quan, thien quan, lien quan
dinh vai » dinh van, dinh vi, dinh va
te sach » toc sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
va dinh » van dinh, va kinh, va tinh
vai cua » dai cua, hai cua, lai cua
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty xang xa hoi. ((hieu qua) or (hieu quan)) cam xuc va dinh vai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty xang xa hoi. ((hieu qua) OR (hieu quan)) cam xuc va dinh vai cua vat.
• Adding a wildcard symbol may retrieve word variants: te sach ty xang xa hoi. ((hieu qua) or (hieu quan)) cam xuc va dinh vai cua vat*.