Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
duc van » duc va, duc tan, duc manh
hanh de » hanh ve
bai ky » ban ky, sai ky, bac ky
nang o » nang co, nang ho, nang ro
te bai » te bao, te tai, te ban
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te bai ky nang o hoi. hieu ve pham duc van ((hanh de) or (hanh kem)) ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te bai ky nang o hoi. hieu ve pham duc van ((hanh de) OR (hanh kem)) ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: te bai ky nang o hoi. hieu ve pham duc van ((hanh de) or (hanh kem)) ((cua triet) or (su triet))*.