Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
hanh via » hanh vi, hanh va, anh va
van hanh » van thanh, ban hanh, van anh
phan duc » pham duc, phan tu, phan dau
toc sach » hoc sach, doc sach, thuoc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va phan » van phan, va phat, va phap
duc van » duc va, duc tan, duc manh
cuu tre » cua tre, cau tren

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