Perhaps you should try some spelling variations:
danh sai » dung sai, danh bat, danh dau
danh vai » danh va, doanh van, dang van
tu sach » thu sach, su sach, te sach
ky sang » ky nang, ky tang, duy sang
ky dang » ky nang, ky danh
lap hai » lap tai, lap lai, lap hoat
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
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 sang) or (ky dang)) lap hai. hieu va cam xuc va ((danh vai) OR (danh sai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky sang) OR (ky dang)) lap hai. hieu va cam xuc va ((danh vai) OR (danh sai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky sang) or (ky dang)) lap hai. hieu va cam xuc va ((danh vai) OR (danh sai)) cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky sang) or (ky dang)) lap hai. hieu va cam xuc va ((danh vai) OR (danh sai)) cua te*.