Perhaps you should try some spelling variations:
ninh viet » sinh vien, anh viet
danh vien » doanh vien, danh viet, dan vien
thu sac » thu sach, thu san, thu xac
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
qua cau » quan cau, qua cac, qua cai
truc va » thuc va, thuc vat, trung va
sac ky » cac ky, sai ky
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 sac ky lang xa hoi. hieu ((qua cau) or (qua ca)) truc va ((danh vien) or (ninh viet)) cac tro~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky lang xa hoi. hieu ((qua cau) OR (qua ca)) truc va ((danh vien) OR (ninh viet)) cac tro.
• Adding a wildcard symbol may retrieve word variants: thu sac ky lang xa hoi. hieu ((qua cau) or (qua ca)) truc va ((danh vien) or (ninh viet)) cac tro*.