Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
lang thang » cang thang, dang thanh, hung thang
dong cong » duong cong, dung cong, dang cong
dang tran » dang thanh, quang tran, hoang tran
van nang » van quang, van ban, van dong
nang dua » nang du, nang suat, nang quan
dua dong » cua dong, duc dong, duy dong

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 - van nang dua dong cong ((lang thang) or (dang tran)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - van nang dua dong cong ((lang thang) OR (dang tran)) cao*.