Perhaps you should try some spelling variations:
doanh vien » doanh tien, doanh chien, thanh vien
danh viet » anh viet, ninh viet, nang viet
cua truc » cua thuoc, cua trung, xuan truc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cua tuc » cua duc, cua tu, cua thuoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky lang xa hoi. hieu qua ((cua truc) OR (cua tuc)) va ((danh viet) or (doanh vien)) cac tro~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang xa hoi. hieu qua ((cua truc) OR (cua tuc)) va ((danh viet) OR (doanh vien)) cac tro.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky lang xa hoi. hieu qua ((cua truc) OR (cua tuc)) va ((danh viet) or (doanh vien)) cac tro".
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang xa hoi. hieu qua ((cua truc) OR (cua tuc)) va ((danh viet) or (doanh vien)) cac tro*.