Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
tu sach » thu sach, su sach, te sach
bo sach » co sach, hoc sach
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
vai cua » dai cua, hai cua, lai cua
hieu d » dieu d, hieu 2, hieu y
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 (bo sach)) ky nang xa hoi. ((hieu d) OR (hieu _)) pham duc va danh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (bo sach)) ky nang xa hoi. ((hieu d) OR (hieu _)) pham duc va danh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (bo sach)) ky nang xa hoi. ((hieu d) OR (hieu _)) pham duc va danh vai cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (bo sach)) ky nang xa hoi. ((hieu d) OR (hieu _)) pham duc va danh vai cua te*.