Perhaps you should try some spelling variations:
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
hanh voi » hanh vi, hanh noi, hanh moi
su triet » su viet, su tien, ve triet
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
ve nam » he nam, le nam, te nam
va nam » van nam, ha nam, va nay
voi su » voi suc, oi su, vi su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu bach) or (so sach)) ky nang xa hoi. hieu ((ve nam) OR (va nam)) thuc van hanh voi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu bach) OR (so sach)) ky nang xa hoi. hieu ((ve nam) OR (va nam)) thuc van hanh voi su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu bach) or (so sach)) ky nang xa hoi. hieu ((ve nam) OR (va nam)) thuc van hanh voi su triet*".