Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
qua phat » qua nhat, qua phan, quy phat
hanh dai » hanh tai, hanh dao, vanh dai
van hanh » van thanh, ban hanh, van anh
que phat » quy phat, cuu phat, su phat
sach ty » sach y, sach tu, sach thu
duc van » duc va, duc tan, duc manh
ty nang » ky nang, ty xang, ty hang
cuu tre » cua tre, cau tren
te sach » toc sach
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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 ty nang o hoi. hieu ((qua phat) OR (que phat)) duc van hanh dai ((cuu tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang o hoi. hieu ((qua phat) OR (que phat)) duc van hanh dai ((cuu tre) OR (cau treo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang o hoi. hieu ((qua phat) OR (que phat)) duc van hanh dai ((cuu tre) or (cau treo))*".