Perhaps you should try some spelling variations:
hanh mai » hanh ma, hanh mau, hanh may
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
ve chim » va chim, ve cham, ve chinh
ve chat » va chat, van chat
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
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: su sach y nang xa hoi. hieu ((ve chim) or (((ve chat) or (va phat)))) xuc va hanh mai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu ((ve chim) OR (((ve chat) OR (va phat)))) xuc va hanh mai va thiet.
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu ((ve chim) or (((ve chat) or (va phat)))) xuc va hanh mai va thiet*.