Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
hanh dai » hanh tai, hanh dao, vanh dai
cuu tre » cua tre, cau tren
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
vu cham » vu kham, tu cham, qua cham
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
va cham » va chat, va tham

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 ((vu cham) or (va cham)) thuc va hanh dai ((cuu tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky tang xa hoi. hieu ((vu cham) OR (va cham)) thuc va hanh dai ((cuu tre) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky tang xa hoi. hieu ((vu cham) or (va cham)) thuc va hanh dai ((cuu tre) or (cau treo))*.