Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
vai cua » hai cua, lai cua, bai cua
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
ang xa » lang xa, mang xa, dang xay
ty ang » ty xang, ty hang, ty anh
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: su sach ty ang xa hoi. hieu ve cac ((xuc va) or (thuc va)) hanh ((vai cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ang xa hoi. hieu ve cac ((xuc va) OR (thuc va)) hanh ((vai cua) OR (dai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty ang xa hoi. hieu ve cac ((xuc va) or (thuc va)) hanh ((vai cua) or (dai cua)) tre*.