Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh xuc » thanh xuan, thanh huy, hanh xu
danh dau » lanh dao, hang dau, danh tu
danh sai » dung sai, danh bat, hanh san
hieu van » hieu va, thien van, lieu va
cau tren » cu tren, dau tren, ca tren
ty nang » ky nang, ty xang, ty hang
su sach » so sach, vu sach
tu sach » thu sach, te sach, tu cach
xuc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) ty nang x hoi. hieu van thanh xuc va ((danh sai) OR (danh dau)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty nang x hoi. hieu van thanh xuc va ((danh sai) OR (danh dau)) cau tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ty nang x hoi. hieu van thanh xuc va ((danh sai) OR (danh dau)) cau tren*".