Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
tu sach » thu sach, te sach, tu cach
vai cua » dai cua, hai cua, lai cua
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
ve cao » va cao, ve cac, ve co
ve bao » te bao, va bao
cua te » cua tu

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) or (su sach)) ky nang xa hoi. hieu ((ve cao) or (ve bao)) duc va danh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang xa hoi. hieu ((ve cao) OR (ve bao)) duc va danh vai cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang xa hoi. hieu ((ve cao) or (ve bao)) duc va danh vai cua te*.