Perhaps you should try some spelling variations:
thien van » thi van
nang cau » nang cao, hang cau, nang dau
hieu van » hieu va, lieu va, hieu ve
ban hanh » ban hang
va triet » va thiet, va trien, ve triet
cau hoa » cau hoi
xuc ban » duc ban, cuc ban, quoc ban
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky nang cau hoa. ((hieu van) or (thien van)) cam xuc ban hanh vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang cau hoa. ((hieu van) OR (thien van)) cam xuc ban hanh vi va triet.
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang cau hoa. ((hieu van) or (thien van)) cam xuc ban hanh vi va triet*.