Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thuc day » thuc dan, thuc vat
hoi hoc » hoa hoc, khoa hoc, hoi chuc
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan
de cua » le cua, te cua, dieu cua
anh de » hanh de, anh d, anh ve
su xac » pu xac, su cac
xac ky » cac ky, sac ky, bac ky
ho hoi » hoc hoi, hoa hoi, hoi 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: su xac ky nang ((ho hoi) or (hoi hoc)). hieu ve nam ((thuc va) OR (thuc day)) anh de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac ky nang ((ho hoi) OR (hoi hoc)). hieu ve nam ((thuc va) OR (thuc day)) anh de cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su xac ky nang ((ho hoi) or (hoi hoc)). hieu ve nam ((thuc va) OR (thuc day)) anh de cua triet*".