Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
bai triet » bai viet, tai thiet, va triet
ly doanh » ly anh
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
sach ky » sach y, sach ty, sach kem
cau luc » cau truc, cau phuc
sac ky » cac ky, sai ky
va cau » van cau, va cac, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat ((sach ky) OR (sac ky)) nang xa hoi. hieu va cau luc ((van doanh) or (ly doanh)) va bai triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach ky) OR (sac ky)) nang xa hoi. hieu va cau luc ((van doanh) OR (ly doanh)) va bai triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((sach ky) OR (sac ky)) nang xa hoi. hieu va cau luc ((van doanh) or (ly doanh)) va bai triet".
• Adding a wildcard symbol may retrieve word variants: thuat ((sach ky) OR (sac ky)) nang xa hoi. hieu va cau luc ((van doanh) or (ly doanh)) va bai triet*.