Perhaps you should try some spelling variations:
cuon sach » duong sach, cuoc cach, co sach
van pham » san pham, van phat, van tham
van phan » van phong, van thanh, luan phan
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
danh di » danh du, xanh di, danh dien
di cua » dai cua, doi cua, de 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: ((su sach) or (cuon sach)) ky nang xa hoi. hieu ((van pham) OR (van phan)) duc va danh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (cuon sach)) ky nang xa hoi. hieu ((van pham) OR (van phan)) duc va danh di cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (cuon sach)) ky nang xa hoi. hieu ((van pham) OR (van phan)) duc va danh di cua te".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (cuon sach)) ky nang xa hoi. hieu ((van pham) OR (van phan)) duc va danh di cua te*.