Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
duc van » duc va, duc tan, duc manh
xuc ban » duc ban, cuc ban, quoc ban
hieu va » lieu va, hieu qua
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
ca tren » cau tren, cu tren, la tren
va cao » va cac, va co, va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky tang xa hoi. hieu va cao ((xuc ban) or (duc van)) hanh vi ((cau treo) or (ca tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky tang xa hoi. hieu va cao ((xuc ban) OR (duc van)) hanh vi ((cau treo) OR (ca tren)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky tang xa hoi. hieu va cao ((xuc ban) or (duc van)) hanh vi ((cau treo) or (ca tren))*.