Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
doanh van » doan van, doanh va, doanh ban
va doanh » van doanh, vay doanh, va danh
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, dua tren
te sach » toc sach
cac tuc » cac toc, cac tac, cac nuoc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
cac tu » cac thu, cach tu, cac du

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