Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
van thanh » ban thanh, van tuan
hai tren » thai tren, gai tren, tai tren
cham xuc » cam xuc, chat xuc, pham duc
sach ky » sac ky, sach y, sach ty
van hai » van ha, van chat, van hanh
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
nang co » nang cao, nang doc, nang noi
nang ro » nang ho, nang ra, nang rong

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 ky ((nang ro) OR (nang co)) hoi. hieu va ((cham xuc) or (cham soc)) van thanh van hai tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang ro) OR (nang co)) hoi. hieu va ((cham xuc) OR (cham soc)) van thanh van hai tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((nang ro) OR (nang co)) hoi. hieu va ((cham xuc) or (cham soc)) van thanh van hai tren*".