Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
van tham » van thanh, van tuan, van chat
van anh » van thanh, tuan anh, van minh
xuc van » duc van, luc van, vuc van
va tham » va cham, va thanh, va thuat
sach vu » sach va, sach tu, sach uu
tu sach » thu sach, su sach, te sach
mai hoi » mai khoi, dai hoi, lai hoi
vu dang » su dang, vu quang, cua dang
ma hoi » xa hoi, ma hoa, me hoi
anh ki » anh kinh, anh kiem, anh kien
ki su » ky 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 vu dang ((ma hoi) OR (mai hoi)). hieu ((va tham) or (van tham)) xuc van anh ki su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach vu dang ((ma hoi) OR (mai hoi)). hieu ((va tham) OR (van tham)) xuc van anh ki su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach vu dang ((ma hoi) OR (mai hoi)). hieu ((va tham) or (van tham)) xuc van anh ki su triet".
• Adding a wildcard symbol may retrieve word variants: tu sach vu dang ((ma hoi) OR (mai hoi)). hieu ((va tham) or (van tham)) xuc van anh ki su triet*.