Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
dang thuoc » dung thuoc
thuoc dong » thuoc dung, thuoc cong, thuoc dang
lang thang » cang thang, dang thanh, hung thang
ganh dang » ganh nang, anh dang, anh dong
dong cong » duong cong, dung cong, dang cong
dang tran » dang thanh, quang tran, hoang tran

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sach - ganh dang thuoc dong cong ((lang thang) or (dang tran)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - ganh dang thuoc dong cong ((lang thang) OR (dang tran)) cao*.