Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
thuc van » thuc vat, thuc dan, thuc va
dan thuc » dan toc, am thuc
xu lang » cu lang, xu dang, xu quang
qua dan » qua danh, qua ban, cua dan
tu lang » cu lang, tu lanh, tu quang
cua tre » cua te, cuu tre, cua triet
te sach » toc sach

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 ((tu lang) OR (xu lang)) xa hoi. hieu qua dan thuc van hanh vai ((cua tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tu lang) OR (xu lang)) xa hoi. hieu qua dan thuc van hanh vai ((cua tre) OR (cau treo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((tu lang) OR (xu lang)) xa hoi. hieu qua dan thuc van hanh vai ((cua tre) or (cau treo))*".