Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
ban hanh » ban hang
hanh lai » hanh lam, hanh tai, thanh lap
tham duc » pham duc, tham du, than duc
hieu van » hieu va, thien van, hieu ve
sach ty » sach y, sach tu, sach thu
duc ban » duc tan, duc van, dua ban
ty nang » ky nang, ty xang, ty hang
vu sach » vu bach, su sach, vu khach
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty nang x hoi. ((hieu van) OR (lieu va)) tham duc ban hanh lai ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang x hoi. ((hieu van) OR (lieu va)) tham duc ban hanh lai ((cua triet) OR (va triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty nang x hoi. ((hieu van) OR (lieu va)) tham duc ban hanh lai ((cua triet) or (va triet))*".