Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
cam nhung » cam hung, nam nhung, tham nhung
dan khan » dan khanh, dan than, dan khai
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sach - ((thanh trung) or (thanh tung)) cam nhung cong ((dan khan) OR (dan chan)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((thanh trung) OR (thanh tung)) cam nhung cong ((dan khan) OR (dan chan)) cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - ((thanh trung) or (thanh tung)) cam nhung cong ((dan khan) OR (dan chan)) cap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((thanh trung) or (thanh tung)) cam nhung cong ((dan khan) OR (dan chan)) cap*.