Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh xuc » thanh xuan, thanh huy, hanh xu
hieu van » hieu va, thien van, lieu va
hanh tai » thanh tai, hang tai, han tai
hanh vai » hanh vi, hanh va, hanh van
sach thu » sach thue, sach thieu, sach tham
cau tren » cu tren, dau tren, ca tren
nang ro » nang co, nang ho, nang ra
tu sach » thu sach, su sach, te sach
xuc va » duc va, tuc va, luc va
nang o » nang co, nang ho, nang x

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu ((nang o) OR (nang ro)) hoi. hieu van thanh xuc va ((hanh vai) OR (hanh tai)) cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thu ((nang o) OR (nang ro)) hoi. hieu van thanh xuc va ((hanh vai) or (hanh tai)) cau tren~".
• Adding a wildcard symbol may retrieve word variants: tu sach thu ((nang o) OR (nang ro)) hoi. hieu van thanh xuc va ((hanh vai) or (hanh tai)) cau tren*.