Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
lanh hai » manh hai, thanh hai, lang chai
thuc day » thuc dan, thuc vat
hai cau » hai chau, hai chu, hai hau
thuc va » thuc vat, thuc dan
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
sach ty » sach tu, sach thu, xach tay
ma hoi » mai hoi, xa hoi, ma hoa
va am » va lam, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach y) or (sach ty)) nang ma hoi. hieu va am ((thuc va) OR (thuc day)) lanh hai cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach y) OR (sach ty)) nang ma hoi. hieu va am ((thuc va) OR (thuc day)) lanh hai cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach y) or (sach ty)) nang ma hoi. hieu va am ((thuc va) OR (thuc day)) lanh hai cau treo".
• Adding a wildcard symbol may retrieve word variants: su ((sach y) or (sach ty)) nang ma hoi. hieu va am ((thuc va) OR (thuc day)) lanh hai cau treo*.