Perhaps you should try some spelling variations:
sach dao » lanh dao
dao nang » cao nang, da nang, dai nang
kham hoc » kham cuoc, kham khoa, khoa hoc
te sach » toc sach
cua tre » cua te, cua triet, dua tren
va hanh » van hanh, va thanh, ban hanh
cuu tre » cau tren, cau treo
va danh » va dinh, va dan, dia danh
su kham » su pham, vu kham, so kham
hieu su » hieu sau, tieu su, hieu so
nang xa » nang x, lang xa, nang ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach dao nang xa hoi. hieu su kham hoc ((va danh) OR (va hanh)) lien ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach dao nang xa hoi. hieu su kham hoc ((va danh) OR (va hanh)) lien ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach dao nang xa hoi. hieu su kham hoc ((va danh) OR (va hanh)) lien ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sach dao nang xa hoi. hieu su kham hoc ((va danh) OR (va hanh)) lien ((cua tre) or (cuu tre))*.