Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
ban hanh » ban hang
cuu nang » chuc nang, cam nang, cuu van
xuc ban » duc ban, cuc ban, quoc ban
tu sach » thu sach, su sach, te sach
uu nang » vu nang, cuu nong, dun nang
ma hoi » mai hoi, xa hoi, ma hoa
va cam » va cham, va cac, va cai
va cao » va cac, va co, va dao
vi su » va su, ve su, ki su

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((uu nang) OR (cuu nang)) ma hoi. hieu ((va cam) or (va cao)) xuc ban hanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((uu nang) OR (cuu nang)) ma hoi. hieu ((va cam) OR (va cao)) xuc ban hanh vi su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((uu nang) OR (cuu nang)) ma hoi. hieu ((va cam) or (va cao)) xuc ban hanh vi su triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((uu nang) OR (cuu nang)) ma hoi. hieu ((va cam) or (va cao)) xuc ban hanh vi su triet*.