Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
hieu san » hieu van, hieu sau, chieu sang
thanh ve » hanh ve, thanh va, thanh vien
su triet » su viet, su tien, ve triet
cua viet » ca viet, hoa viet, cua vat
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
duc van » duc va, duc tan, duc manh
tu sai » tu bai, tu san, tu cai
sai ky » sac ky

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 lang xa hoi. hieu san (pham OR phan) duc van thanh ve ((su triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky lang xa hoi. hieu san (pham OR phan) duc van thanh ve ((su triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky lang xa hoi. hieu san (pham OR phan) duc van thanh ve ((su triet) or (cua viet))".
• Adding a wildcard symbol may retrieve word variants: tu sai ky lang xa hoi. hieu san (pham OR phan) duc van thanh ve ((su triet) or (cua viet))*.