Perhaps you should try some spelling variations:
manh tinh » man tinh, manh binh, canh tinh
cham duc » pham duc, cham soc, pham duy
duc manh » suc manh, duc anh, duc minh
tinh hai » tinh thai, tinh chat, trinh han
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
ty hang » ly hang, thi hang, thu hang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
hai cua » thai cua, dai cua, hoi cua
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 ve cham duc manh tinh hai 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 ve cham duc manh tinh hai cua viet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty xang) or (ty hang)) x hoi. hieu ve cham duc manh tinh hai cua viet*.