Perhaps you should try some spelling variations:
nang viet » anh viet
danh vien » doanh vien, danh viet, dan vien
thu sach » tu sach, thuat sach, thuoc sach
dang xay » dang van, van xay
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
qua cau » quan cau, qua cac, qua ca
truc va » thuc va, thuc vat, trung va

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 dang xay hoi. hieu qua cau truc va ((danh vien) or (nang viet)) cac tro~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky dang xay hoi. hieu qua cau truc va ((danh vien) OR (nang viet)) cac tro.
• Adding a wildcard symbol may retrieve word variants: thu sach ky dang xay hoi. hieu qua cau truc va ((danh vien) or (nang viet)) cac tro*.