Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van doanh » toan doanh, van dong, van thanh
bai triet » bai viet, tai thiet, va triet
ly doanh » ly anh
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
cau luc » cau truc, cau phuc
nang xa » lang xa, nang ma, mang xa
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 ((nang xa) or (nang x)) 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 ((nang xa) OR (nang x)) hoi. hieu va cau luc ((van doanh) OR (ly doanh)) va bai triet.
• Adding a wildcard symbol may retrieve word variants: thuat sach ky ((nang xa) or (nang x)) hoi. hieu va cau luc ((van doanh) or (ly doanh)) va bai triet*.