Perhaps you should try some spelling variations:
te sach » toc sach
duc van » duc va, duc tan, duc manh
cua tre » cua te, cua triet, dua tren
anh kem » hanh kem, anh kiem, banh kem
van anh » van thanh, tuan anh, van minh
cau duc » cao duc, cau luc, chu duc
hieu ve » hieu va, hieu van
cuu tre » cau tren, cau treo
y nang » ly nang, v nang, may nang
ve cau » ke cau, va cau, ve cac
co hoi » co hoc, co loi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((y nang) OR (ky nang)) co hoi. hieu ve cau duc van anh kem ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ky nang)) co hoi. hieu ve cau duc van anh kem ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (ky nang)) co hoi. hieu ve cau duc van anh kem ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (ky nang)) co hoi. hieu ve cau duc van anh kem ((cua tre) or (cuu tre))*.