Perhaps you should try some spelling variations:
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
ve cham » va cham, vu cham, viet cham
ve chim » va chim, ve chinh, te chiem
ve chat » va chat, van chat
han tai » hang tai, nhan tai, van tai
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
va han » va phan, van han, va hanh
tai va » thai va, mai va, tri 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 cham) OR (ve chim))) or (ve chat)) xuc va han tai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu ((((ve cham) OR (ve chim))) OR (ve chat)) xuc va han tai va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. hieu ((((ve cham) OR (ve chim))) or (ve chat)) xuc va han tai va thiet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu ((((ve cham) OR (ve chim))) or (ve chat)) xuc va han tai va thiet*.