Perhaps you should try some spelling variations:
lang thong » lang trong, lang thang, mang thong
quan trong » gian trong
thanh ban » thanh san, thanh van, thanh bai
thanh bac » nhanh bac, thanh bai, thanh san
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
cong van » cong vang, cong san, song van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - lang thong quan trong cong van ((thanh ban) or (thanh bac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - lang thong quan trong cong van ((thanh ban) OR (thanh bac)).
• Adding a wildcard symbol may retrieve word variants: theo chu sach - lang thong quan trong cong van ((thanh ban) or (thanh bac))*.