Perhaps you should try some spelling variations:
dam thuc » am thuc, dan thuc, nam thuc
te sach » toc sach
dai cuu » dai cua, dai huu
va dinh » van dinh, va kinh, va tinh
va danh » va dan, va hanh, dia danh
cuu tre » cua tre, cau tren, cau treo
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
cam tu » cam thu, nam tu, dam tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. hieu ve ((dam thuc) OR (cam tu)) ((va danh) OR (va dinh)) dai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. hieu ve ((dam thuc) or (cam tu)) ((va danh) OR (va dinh)) dai cuu tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu ve ((dam thuc) or (cam tu)) ((va danh) OR (va dinh)) dai cuu tre*.