Perhaps you should try some spelling variations:
hang tai » hang va, dung tai
hanh tai » thanh tai, han tai, hinh tai
cac thuc » cach thuc, cac thu, can thuc
su sach » so sach, vu sach
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
sach ly » sach y, sach lo, sach ty
hang ca » hang va, nang cao, hang dau
hang xa » hoang xa, hang va, lang xa
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac

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 ly ((hang xa) or (hang ca)) hoi. hieu ve cac thuc va ((hanh tai) or (hang tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly ((hang xa) OR (hang ca)) hoi. hieu ve cac thuc va ((hanh tai) OR (hang tai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ly ((hang xa) or (hang ca)) hoi. hieu ve cac thuc va ((hanh tai) or (hang tai)) cua tre*.