Perhaps you should try some spelling variations:
thien van » thi van
pham thuc » phap thuc, pham chuc, nham thuc
van pham » san pham, van phan, van phat
thuc van » thuc vat, thuc dan, thuc va
van dinh » van minh, van dich, va dinh
dinh dat » dinh ket, dinh van, dinh lam
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
dat cua » dai cua, day cua, mat cua
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach ky) or (sac ky)) nang xa hoi. thien van pham thuc van dinh dat cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ky) OR (sac ky)) nang xa hoi. thien van pham thuc van dinh dat cua tre.
• Adding a wildcard symbol may retrieve word variants: toc ((sach ky) or (sac ky)) nang xa hoi. thien van pham thuc van dinh dat cua tre*.