Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
chat thuc » thuat thuc, nhan thuc, chat thai
hieu cao » chieu cao, hieu cac, hieu ca
danh dai » danh dau, danh di, vanh dai
danh sai » dung sai, danh bat, danh dau
nang xa » nang x, lang xa, nang ma
sach ky » sac ky, sach ty, sach kem
thuc va » thuc vat, thuc dan, thuc day

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ky) OR (sach y)) nang xa hoi. hieu cao chat thuc va ((danh dai) or (danh sai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sach y)) nang xa hoi. hieu cao chat thuc va ((danh dai) OR (danh sai)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) OR (sach y)) nang xa hoi. hieu cao chat thuc va ((danh dai) or (danh sai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) OR (sach y)) nang xa hoi. hieu cao chat thuc va ((danh dai) or (danh sai)) cua triet*.