Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
dinh tri » dinh thi, chinh tri
sach ty » sach tu, sach thu, xach tay
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
thuc va » thuc vat, thuc dan, thuc day
va dinh » van dinh, va kinh, va tinh
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((sach ty) or (sach y)) nang xa hoi. lieu va cham thuc va dinh tri cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((sach ty) OR (sach y)) nang xa hoi. lieu va cham thuc va dinh tri cua te.
• Adding a wildcard symbol may retrieve word variants: doc ((sach ty) or (sach y)) nang xa hoi. lieu va cham thuc va dinh tri cua te*.