Perhaps you should try some spelling variations:
doanh vien » doanh tien, doanh chien, thanh vien
danh vien » danh viet, dan vien, danh kien
thu sach » tu sach, thuat sach, thuoc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
ca truc » cau truc, ca tru, ba truc
truc va » thuc va, thuc vat, trung va
qua ca » qua cac, qua cua, qua cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang xa hoi. hieu qua ca truc va ((danh vien) OR (doanh vien)) cac tro~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang xa hoi. hieu qua ca truc va ((danh vien) OR (doanh vien)) cac tro".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. hieu qua ca truc va ((danh vien) OR (doanh vien)) cac tro*.