Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hang hai » hoang hai, hang tai, thanh hai
cam duc » cam xuc, pham duc, nam duoc
hai cua » thai cua, dai cua, hoi cua
va hang » van hang, va nang, va lang
kv nang » ky nang, ki nang, ke nang
hieu ve » hieu va, hieu van
cao duc » dao duc, cao suc, giao duc
v nang » va nang, vu nang, van nang
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ((v nang) or (kv nang)) xa hoi. hieu ve ((cam duc) or (cao duc)) va hang hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ((v nang) OR (kv nang)) xa hoi. hieu ve ((cam duc) OR (cao duc)) va hang hai cua te.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((v nang) or (kv nang)) xa hoi. hieu ve ((cam duc) or (cao duc)) va hang hai cua te*.