Perhaps you should try some spelling variations:
hanh vai » hanh va, hanh tai, hanh van
vu cach » va cach, ve cach, vu bach
cach le » cach de, cac le, cach ben
le mang » le tang, le manh, le dang
mang xa » lang xa, mang may, dang xay
qua gia » quy gia, cua gia, quang gia
gia duc » giao duc, gia muc, gia thuc
thiet » thieu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu cach le mang xa hoi. hieu qua gia duc va ((hanh vai) OR (hanh vi)) va thiet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu cach le mang xa hoi. hieu qua gia duc va ((hanh vai) OR (hanh vi)) va thiet".
• Adding a wildcard symbol may retrieve word variants: vu cach le mang xa hoi. hieu qua gia duc va ((hanh vai) OR (hanh vi)) va thiet*.