Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh loi » thanh hoa, thanh hai, thanh lap
thanh doi » thanh moi, thanh do, thanh hoai
nam thuc » nam thuoc, am thuc, nam thu
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
me hoi » le hoi
ve nam » he nam, va nam, le nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang ((me hoi) or (mai hoi)). hieu ve nam thuc va ((thanh doi) OR (thanh loi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang ((me hoi) OR (mai hoi)). hieu ve nam thuc va ((thanh doi) OR (thanh loi)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang ((me hoi) or (mai hoi)). hieu ve nam thuc va ((thanh doi) OR (thanh loi)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang ((me hoi) or (mai hoi)). hieu ve nam thuc va ((thanh doi) OR (thanh loi)) cua triet*.