Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hoang » van hoang, quan hoang, tran hoang
ban hang » ngan hang
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va chao » va cao, va chat, va cham
san cua » sang cua, ban cua, dan cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang xa hoi. hieu va chao xu ((ban hoang) or (ban hang)) san cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang xa hoi. hieu va chao xu ((ban hoang) OR (ban hang)) san cua triet.
• Adding a wildcard symbol may retrieve word variants: so sach ky nang xa hoi. hieu va chao xu ((ban hoang) or (ban hang)) san cua triet*.