Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
tu sach » su sach, te sach, tu cach
hanh de » hanh ve, hanh kem
va hanh » van hanh, va thanh, va danh
cac duc » cao duc, cac dac, cac nuoc
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
de cuu » de cua

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) or (thu sach)) ky nang xa hoi. hieu ve ((cac duc) or (cac du)) va hanh de cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang xa hoi. hieu ve ((cac duc) OR (cac du)) va hanh de cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang xa hoi. hieu ve ((cac duc) or (cac du)) va hanh de cuu tre*.