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