Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
nang tai » hang tai, tang tai, sang tai
te sach » toc sach
tai hoi » tai khoi, dai hoi, tai hai
hieu ve » hieu va, hieu van
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
y nang » ky nang, ly nang, v nang
cac tu » cac thu, cach tu, tac tu

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 tai hoi. hieu ve ((cac tu) OR (cac du)) gia thanh tai ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang tai hoi. hieu ve ((cac tu) OR (cac du)) gia thanh tai ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang tai hoi. hieu ve ((cac tu) OR (cac du)) gia thanh tai ((cuu tre) or (cua tre))".
• Adding a wildcard symbol may retrieve word variants: te sach y nang tai hoi. hieu ve ((cac tu) OR (cac du)) gia thanh tai ((cuu tre) or (cua tre))*.