Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
sach va » sach xa, sach ha, sach dao
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
nang xa » lang xa, mang xa, ang xa
soc va » hoc va, loc va, doc va
di cua » dai cua, doi cua, de cua

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 va ((((nang xa) OR (nang x))) or (nang ma)) hoi. hieu vu cham soc va hanh di cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach va ((((nang xa) OR (nang x))) OR (nang ma)) hoi. hieu vu cham soc va hanh di cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach va ((((nang xa) OR (nang x))) or (nang ma)) hoi. hieu vu cham soc va hanh di cua viet".
• Adding a wildcard symbol may retrieve word variants: tu sach va ((((nang xa) OR (nang x))) or (nang ma)) hoi. hieu vu cham soc va hanh di cua viet*.