Perhaps you should try some spelling variations:
thang long » thanh cong
thieu sach » chieu sach, thien hach, hieu cach
hanh dong » anh dong, ha dong
dang cong » dung cong
dong van » duong van, dang van, dong von
tri phan » tri nhan, tai phan, trinh phan
phan lap » phan dau

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 - hanh dong van ((dang cong) or (thang long)) tri phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - hanh dong van ((dang cong) OR (thang long)) tri phan lap.
• Adding a wildcard symbol may retrieve word variants: toc thieu sach - hanh dong van ((dang cong) or (thang long)) tri phan lap*.