Perhaps you should try some spelling variations:
su sach » so sach
hanh ve » hanh vi, hanh va, hanh kem
hanh de » hanh kem
hieu ve » hieu va, hieu van
ly nang » ky nang, ly hang, ly vang
vu sach » vu bach, vu khach
cuu tre » cua tre, cau tren, cau treo
x hoi » xa hoi, o hoi, x ho
ve am » va am
thuc » thu

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 (vu sach)) ly nang x hoi. hieu ve am thuc vat ((hanh de) or (hanh ve)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ly nang x hoi. hieu ve am thuc vat ((hanh de) OR (hanh ve)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ly nang x hoi. hieu ve am thuc vat ((hanh de) or (hanh ve)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ly nang x hoi. hieu ve am thuc vat ((hanh de) or (hanh ve)) cuu tre*.