Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
su triet » su viet, su tien, ve triet
va triet » va thiet, va trien, ve triet
thanh vi » hanh vi, thanh va, thanh ve
nhan luu » nhan luc, nhan lupus, nhan luan
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
luu van » cuu van, luan van, luu hanh
tu bai » tu ban, tu bat, te bai
tu sai » tu san, tu cai, tu lai
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: ((tu sai) OR (tu bai)) ky nang x hoi. hieu va nhan luu van thanh vi ((va triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sai) OR (tu bai)) ky nang x hoi. hieu va nhan luu van thanh vi ((va triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sai) OR (tu bai)) ky nang x hoi. hieu va nhan luu van thanh vi ((va triet) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: ((tu sai) OR (tu bai)) ky nang x hoi. hieu va nhan luu van thanh vi ((va triet) or (su triet))*.