Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
thuc dan » thuc hanh, hoc dan
nang ho » nang hoc, nang co, tang ho
hieu ve » hieu va, hieu van
hanh di » hanh vi, hanh de, hang di
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ve nam » he nam, va nam, le nam
ho hoi » hoc hoi, hoa hoi, hoi hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang ho hoi. hieu ve nam ((thuc dan) OR (thuc vat)) hanh di ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang ho hoi. hieu ve nam ((thuc dan) OR (thuc vat)) hanh di ((cua triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang ho hoi. hieu ve nam ((thuc dan) OR (thuc vat)) hanh di ((cua triet) or (su triet))*".