Perhaps you should try some spelling variations:
giang day » gian dan
gianh dai » gianh lai, gian dan, gian dac
cua viet » ca viet, hoa viet, cua vat
soc manh » suc manh, ho manh, duc manh
tu sach » thu sach, su sach, te sach
hieu vu » hieu va, hieu ve, hieu su
ty hang » ly hang, thi hang, thu hang
vu cham » va cham, vu kham, tu cham
x hoi » xa hoi, o hoi, x ho

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 ((ty xang) or (ty hang)) x hoi. hieu vu cham soc manh ((gianh dai) or (giang day)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty xang) OR (ty hang)) x hoi. hieu vu cham soc manh ((gianh dai) OR (giang day)) cua viet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty xang) or (ty hang)) x hoi. hieu vu cham soc manh ((gianh dai) or (giang day)) cua viet*.