Perhaps you should try some spelling variations:
thien van » thi van
nam thuc » nam thuoc, am thuc, nam thu
va thanh » gia thanh, ban thanh, va tinh
thanh va » thanh van, hanh va, thanh ha
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
cua cu » cua chu, cua cau, cua su

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 ky dang xa hoi. thien van nam thuc va thanh va ((cua tre) or (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky dang xa hoi. thien van nam thuc va thanh va ((cua tre) OR (cua cu)).
• Adding a wildcard symbol may retrieve word variants: su sach ky dang xa hoi. thien van nam thuc va thanh va ((cua tre) or (cua cu))*.