Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
vu sach » vu bach, su sach, vu khach
vu cham » va cham, vu kham, tu cham
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
ve cham » va cham, ve chat, ve chim
xang xa » lang xa, mang xa, ang xa
so sach » so sanh, bo sach, co sach
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (so sach)) ty xang xa hoi. hieu ((ve cham) OR (vu cham)) luc va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (so sach)) ty xang xa hoi. hieu ((ve cham) OR (vu cham)) luc va thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (so sach)) ty xang xa hoi. hieu ((ve cham) OR (vu cham)) luc va thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (so sach)) ty xang xa hoi. hieu ((ve cham) OR (vu cham)) luc va thanh vai cua tre*.