Perhaps you should try some spelling variations:
manh gianh » manh giang, manh binh, manh tinh
gianh dai » gianh lai, gian dan, giang day
cua viet » ca viet, cua vat, cua dieu
soc manh » suc manh, ho manh, duc manh
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
tu sach » thu sach, su sach, te sach
ty hang » ly hang, ty xang, thi hang
ty nang » ky nang, ty xang, ly nang
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 nang) or (ty hang)) x hoi. hieu ve cham soc manh gianh dai ((cua viet) OR (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ty hang)) x hoi. hieu ve cham soc manh gianh dai ((cua viet) OR (hoa viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty nang) or (ty hang)) x hoi. hieu ve cham soc manh gianh dai ((cua viet) OR (hoa viet))".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) or (ty hang)) x hoi. hieu ve cham soc manh gianh dai ((cua viet) OR (hoa viet))*.