Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh di » thanh doi, thanh do, thanh dinh
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
thuc van » thuc vat, thuc dan, thuc va
thanh de » hanh de, thanh ve, thanh do
su viet » so viet
nang ho » nang hoc, nang co, tang ho
sai ky » sac ky
ho hoi » hoc hoi, hoa hoi, hoi hoi
su sai » su tai, su hai, su dai

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

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