Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
canh tay » canh tac, thanh tay, anh ta
hanh de » hanh ve, hanh kem
thuc va » thuc dan, thuc day
nang xa » nang x, lang xa, nang ma
sach tu » sach thu, cach tu, sach ty
de cau » ke cau, le cau, ve cau
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: te ((canh tay) or (sach tu)) nang xa hoi. lieu va cao ((thuc va) OR (thuc vat)) hanh de cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((canh tay) OR (sach tu)) nang xa hoi. lieu va cao ((thuc va) OR (thuc vat)) hanh de cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((canh tay) or (sach tu)) nang xa hoi. lieu va cao ((thuc va) OR (thuc vat)) hanh de cau tren".
• Adding a wildcard symbol may retrieve word variants: te ((canh tay) or (sach tu)) nang xa hoi. lieu va cao ((thuc va) OR (thuc vat)) hanh de cau tren*.