Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
su sach » so sach, vu sach
vai cua » dai cua, hai cua, lai cua
ky dang » ky danh
lap hai » lap tai, lap lai, lap hoat
va danh » va dinh, va dan, va hanh
ve cac » vien cac
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: su sach ((ky nang) or (ky dang)) lap hai. hieu ((ve cac) OR (va cac)) xuc va danh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky nang) OR (ky dang)) lap hai. hieu ((ve cac) OR (va cac)) xuc va danh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky nang) or (ky dang)) lap hai. hieu ((ve cac) OR (va cac)) xuc va danh vai cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky nang) or (ky dang)) lap hai. hieu ((ve cac) OR (va cac)) xuc va danh vai cua te*.