Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
cham duc » pham duc, cham soc, pham duy
danh dau » lanh dao, hang dau, danh tu
va danh » va dinh, va dan, va hanh
te sach » toc sach
hieu vu » hieu va, hieu ve, hieu su
mai hoi » mai khoi, dai hoi, lai hoi
vu cham » va cham, vu kham, tu cham
y tang » ky tang, 6 tang, 7 tang
ma hoi » xa hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y tang ((ma hoi) or (mai hoi)). hieu vu cham duc va danh dau ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y tang ((ma hoi) OR (mai hoi)). hieu vu cham duc va danh dau ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: te sach y tang ((ma hoi) or (mai hoi)). hieu vu cham duc va danh dau ((cua triet) or (su triet))*.