Perhaps you should try some spelling variations:
thuc gia » thuc giai, thue gia, thuc dia
thanh vi » hanh vi, thanh va, thanh ve
cau treo » cau theo, cau tren, cau triet
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. hieu ((va cach) or (va cac)) thuc gia thanh vi ((cuu tre) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang xa hoi. hieu ((va cach) OR (va cac)) thuc gia thanh vi ((cuu tre) OR (cau treo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y nang xa hoi. hieu ((va cach) or (va cac)) thuc gia thanh vi ((cuu tre) OR (cau treo))".
• Adding a wildcard symbol may retrieve word variants: so sach y nang xa hoi. hieu ((va cach) or (va cac)) thuc gia thanh vi ((cuu tre) OR (cau treo))*.