Perhaps you should try some spelling variations:
thuc day » thuc dan, thuc vat
cau tren » cu tren, dau tren, ca tren
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
sach ky » sac ky, sach ty, sach kem
thuc va » thuc vat, thuc dan
dan vai » dan va, dan tai, dan vat
vai cau » va cau, van cau, vai cac
va nam » van nam, ha nam, va nay

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach ky) or (sach y)) dang xa hoi. hieu va nam ((thuc va) or (thuc day)) dan vai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ky) OR (sach y)) dang xa hoi. hieu va nam ((thuc va) OR (thuc day)) dan vai cau tren.
• Adding a wildcard symbol may retrieve word variants: toc ((sach ky) or (sach y)) dang xa hoi. hieu va nam ((thuc va) or (thuc day)) dan vai cau tren*.