Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
day danh » day manh, dai danh, dao danh
thuc day » thuc dan, thuc vat
su sach » so sach
danh te » danh tu, danh het, danh yen
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
vu sach » vu bach, vu khach
te cua » tue cua, le cua, de cua
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ty ((nang xa) OR (lang xa)) hoi. hieu ve pham thuc day danh te cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ty ((nang xa) OR (lang xa)) hoi. hieu ve pham thuc day danh te cua te~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ty ((nang xa) OR (lang xa)) hoi. hieu ve pham thuc day danh te cua te*.