Perhaps you should try some spelling variations:
doanh vien » doanh tien, doanh chien, thanh vien
cham loc » cham soc, chon loc, cham o
va doanh » van doanh, vay doanh, va danh
va cham » va chat, va tham
te sach » toc sach
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
loc va » hoc va, luc va
cac te » cac he, cac tu, cac le
cac ke » cac ket, tac ke, cac ky

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 y ((nang xa) or (nang x)) hoi. hieu va cham loc va doanh vien ((cac te) OR (cac ke))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang xa) OR (nang x)) hoi. hieu va cham loc va doanh vien ((cac te) OR (cac ke)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((nang xa) or (nang x)) hoi. hieu va cham loc va doanh vien ((cac te) OR (cac ke))".
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang xa) or (nang x)) hoi. hieu va cham loc va doanh vien ((cac te) OR (cac ke))*.