Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
thanh vai » thanh hai, thanh tai, thanh oai
su sach » so sach, vu sach
ky dang » ky nang, ky danh
ky tang » ky nang, kho tang, ky trong
cac dac » cac dan, cac dai, cac bac
dac gia » tac gia, duc gia, dau gia
cua te » cua tu

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 ((ky dang) or (ky tang)) xa hoi. lieu va cac dac gia ((thanh vai) OR (thanh van)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky dang) OR (ky tang)) xa hoi. lieu va cac dac gia ((thanh vai) OR (thanh van)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky dang) or (ky tang)) xa hoi. lieu va cac dac gia ((thanh vai) OR (thanh van)) cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky dang) or (ky tang)) xa hoi. lieu va cac dac gia ((thanh vai) OR (thanh van)) cua te*.