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, nhung don
hoc thieu » toc thieu, hoc hien
hang cong » dang cong, hang nong, bang cong
tung cua » trung cua, tuong cua, dung cua
dan chan » dan gian, dan ca
van chat » cao 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 tung cua ((nhung cong) or (hang cong)) ((dan chan) OR (van chat)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh tung cua ((nhung cong) OR (hang cong)) ((dan chan) OR (van chat)) cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - thanh tung cua ((nhung cong) or (hang cong)) ((dan chan) OR (van chat)) cao*".