Perhaps you should try some spelling variations:
su sach » so sach, vu sach
hanh de » hanh ve, hanh kem
va hanh » van hanh, va thanh, va danh
va nhan » van nhan, va phan, va nha
nang xa » nang x, lang xa, nang ma
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va
de cua » le cua, te cua, dieu cua

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 (te sach)) ky nang xa hoi. hieu ((va nhan) OR (ca nhan)) luc va hanh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) ky nang xa hoi. hieu ((va nhan) OR (ca nhan)) luc va hanh de cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (te sach)) ky nang xa hoi. hieu ((va nhan) OR (ca nhan)) luc va hanh de cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (te sach)) ky nang xa hoi. hieu ((va nhan) OR (ca nhan)) luc va hanh de cua tre*.