Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
ve phan » va phan, ve phat, vi phan
ke phan » kenh phan, ke thang
va danh » va dinh, va dan, va hanh
vai cua » dai cua, hai cua, lai cua
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: so sach ty nang x ho. hieu ((((ve phan) OR (ke phan))) or (vi pham)) duc va danh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang x ho. hieu ((((ve phan) OR (ke phan))) OR (vi pham)) duc va danh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang x ho. hieu ((((ve phan) OR (ke phan))) or (vi pham)) duc va danh vai cua te".
• Adding a wildcard symbol may retrieve word variants: so sach ty nang x ho. hieu ((((ve phan) OR (ke phan))) or (vi pham)) duc va danh vai cua te*.