Perhaps you should try some spelling variations:
thong minh » thong tin, hoang minh
hong minh » hoang minh, khong minh, hong hinh
sach cua » mach cua, cach cua, sac cua
che viec » che viet, cho viec, che bien
sach che » sach thue, sach nha, sach cap
bo thong » pho thong, bo truong, he thong
nguoi bo » nguoi co, nguoi do, nguoi o
vi nguoi » voi nguoi, via nguoi, va nguoi
gio hon » gioi hon, gio hoac, gioi bon
gio hoc » gio hoac, giup hoc, gioi hoa
su sach » so sach, vu sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su sach cua vi nguoi bo thong minh ) or ( su sach che viec ((gio hon) OR (gio hoc)) hong minh ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach cua vi nguoi bo thong minh ) OR ( su sach che viec ((gio hon) OR (gio hoc)) hong minh )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( su sach cua vi nguoi bo thong minh ) or ( su sach che viec ((gio hon) OR (gio hoc)) hong minh ))".
• Adding a wildcard symbol may retrieve word variants: (( su sach cua vi nguoi bo thong minh ) or ( su sach che viec ((gio hon) OR (gio hoc)) hong minh ))*.