Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
hieu van » hieu va, thien van, lieu va
thanh va » hanh va, thanh ha, thanh ve
cau tren » cu tren, dau tren, ca tren
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
x hoi » xa hoi, o hoi, x ho

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: su sach ky nang x hoi. hieu van ((cam xuc) OR (cham soc)) van ((thanh va) OR (thanh van)) cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. hieu van ((cam xuc) or (cham soc)) van ((thanh va) OR (thanh van)) cau tren~".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu van ((cam xuc) or (cham soc)) van ((thanh va) OR (thanh van)) cau tren*.