Perhaps you should try some spelling variations:
lang dai » lang hai, lang mai, lang chai
hang hai » hoang hai, hang tai, thanh hai
van hang » van khang, van hoang, van thang
nang doc » nang luc
so sach » so sanh, bo sach, co sach
cam luc » cau luc
hai cua » thai cua, dai cua, hoi cua
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
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: so sach ky ((lang dai) or (nang doc)) hoi. hieu ve ((cam luc) OR (cam xuc)) van hang hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky ((lang dai) OR (nang doc)) hoi. hieu ve ((cam luc) OR (cam xuc)) van hang hai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky ((lang dai) or (nang doc)) hoi. hieu ve ((cam luc) OR (cam xuc)) van hang hai cua te*".