Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
ban hang » ngan hang
sach ky » sac ky, sach y, sach ty
hang di » hang doi, hang vi, hang dien
te sach » toc sach
nang xa » nang x, lang xa, nang ma
lo ban » co ban, lo van, ly ban
ve cac » vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang xa hoi. hieu ((ve cac) OR (va cac)) lo ban hang di ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ((ve cac) OR (va cac)) lo ban hang di ((cua triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu ((ve cac) OR (va cac)) lo ban hang di ((cua triet) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ((ve cac) OR (va cac)) lo ban hang di ((cua triet) or (su triet))*.