Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
va doanh » van doanh, vay doanh, hoa doanh
van bac » van ban, van bao, van hac
bac tuc » bac tu, bach tuoc, bac thua
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, va hanh
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, dua tren
te sach » toc sach

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 ky nang xa hoi. hieu van bac tuc ((va doanh) or (va danh)) van ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu van bac tuc ((va doanh) OR (va danh)) van ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu van bac tuc ((va doanh) or (va danh)) van ((cua tre) OR (cua triet))*".