Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
danh vai » danh sai, danh va, dang van
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
van cam » van nam, van lam, van cau
ky danh » ky anh
ky dang » ky nang
xuc va » duc va, tuc va, luc va
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 ((ky dang) OR (ky danh)) xa hoi. hieu van cam xuc va ((danh vai) or (doanh van)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky dang) OR (ky danh)) xa hoi. hieu van cam xuc va ((danh vai) OR (doanh van)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky dang) OR (ky danh)) xa hoi. hieu van cam xuc va ((danh vai) or (doanh van)) cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky dang) OR (ky danh)) xa hoi. hieu van cam xuc va ((danh vai) or (doanh van)) cua te*.