Perhaps you should try some spelling variations:
thanh van » thanh toan, thanh phan, thanh nhan
hieu van » hieu va, thien van, lieu va
cham xuc » chat xuc, cham soc, pham duc
co sach » bo sach, cuon sach, hoc sach
sach ky » sac ky, sach y, sach ty
ca tren » cau tren, cu tren, la tren
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: co sach ky nang x hoi. hieu van ((cham xuc) or (cam xuc)) ban ((thanh van) OR (thanh san)) ca tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach ky nang x hoi. hieu van ((cham xuc) OR (cam xuc)) ban ((thanh van) OR (thanh san)) ca tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach ky nang x hoi. hieu van ((cham xuc) or (cam xuc)) ban ((thanh van) OR (thanh san)) ca tren".
• Adding a wildcard symbol may retrieve word variants: co sach ky nang x hoi. hieu van ((cham xuc) or (cam xuc)) ban ((thanh van) OR (thanh san)) ca tren*.