Perhaps you should try some spelling variations:
van thang » van thanh, van khang, van hang
thuc van » thuc vat, thuc dan, thuc va
thang de » thanh de, trang de, thuong de
tu cach » tu cac
su sach » so sach, vu sach
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
de cua » le cua, te cua, dieu cua
ve am » va am

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (su sach)) ky tang xa hoi. hieu ve am thuc van thang de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky tang xa hoi. hieu ve am thuc van thang de cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) ky tang xa hoi. hieu ve am thuc van thang de cua tre*.