Perhaps you should try some spelling variations:
thuc day » thuc dan, thuc vat
day hang » dat hang, dai hang, day nang
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
so sanh » do sanh
ky tang » ky nang, ky dang, kho tang
tang ha » lang ha, tang ma, trung ha
hieu ve » hieu va, hieu van
hang di » hang doi, hang vi, hang dien
ha hoi » hoa hoi, ha noi, xa hoi
di cau » da cau, diem cau
ve am » va am

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) or (so sanh)) ky tang ha hoi. hieu ve am thuc day hang di cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (so sanh)) ky tang ha hoi. hieu ve am thuc day hang di cau tren.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (so sanh)) ky tang ha hoi. hieu ve am thuc day hang di cau tren*.