Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
cau treo » cau theo, cau tren, cau triet
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach kem
thuc va » thuc vat, thuc day
dan tai » van tai, dan thi, han tai
tai cau » tai cac, tai cao
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 ty)) lang xa hoi. hieu va nam ((thuc va) or (thuc dan)) dan tai cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ky) OR (sach ty)) lang xa hoi. hieu va nam ((thuc va) OR (thuc dan)) dan tai cau treo.
• Adding a wildcard symbol may retrieve word variants: toc ((sach ky) or (sach ty)) lang xa hoi. hieu va nam ((thuc va) or (thuc dan)) dan tai cau treo*.