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