Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
te sach » toc sach
hang di » hang doi, hang vi, hang dien
thuc va » thuc vat, thuc day
cau tre » cau tren, cau treo, cau tra
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
so sach » so sanh, bo sach, co sach
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 sach)) ky nang xa hoi. hieu ve am ((thuc va) OR (thuc dan)) hang di cau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (so sach)) ky nang xa hoi. hieu ve am ((thuc va) OR (thuc dan)) hang di cau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (so sach)) ky nang xa hoi. hieu ve am ((thuc va) OR (thuc dan)) hang di cau tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (so sach)) ky nang xa hoi. hieu ve am ((thuc va) OR (thuc dan)) hang di cau tre*.