Perhaps you should try some spelling variations:
thuoc sac » thuoc sach, thuoc dac, thuoc sai
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
cau treo » cau theo, cau tren, cau triet
hieu van » hieu va, thien van, lieu va
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sac ky lang xa hoi. hieu van ((pham duc) or (cam xuc)) van thanh vi ((cua tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sac ky lang xa hoi. hieu van ((pham duc) OR (cam xuc)) van thanh vi ((cua tre) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: thuoc sac ky lang xa hoi. hieu van ((pham duc) or (cam xuc)) van thanh vi ((cua tre) or (cau treo))*.