Perhaps you should try some spelling variations:
thai truc » thai thuc, thai tuc, thi truc
tinh tri » dinh tri, minh tri, chinh tri
sach ky » sach ty, sach kem, sach hay
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va thai » van thai, va tai, va tham
truc va » thuc va, thuc vat, trung va
va tinh » may tinh
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: su ((((sach ky) OR (sach y))) or (sac ky)) nang xa hoi. hieu va thai truc va tinh tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((((sach ky) OR (sach y))) OR (sac ky)) nang xa hoi. hieu va thai truc va tinh tri cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((((sach ky) OR (sach y))) or (sac ky)) nang xa hoi. hieu va thai truc va tinh tri cua tre*".