Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
nhung cong » thong cong, hang cong, nhung don
tung tuan » trung tuan, quang tuan, trang tuan
hung tuan » hung tran, quang tuan, trung tuan
dung cong » dung trong
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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 - thanh ((tung tuan) or (hung tuan)) ((nhung cong) OR (dung cong)) dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - thanh ((tung tuan) OR (hung tuan)) ((nhung cong) OR (dung cong)) dan chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu sach - thanh ((tung tuan) or (hung tuan)) ((nhung cong) OR (dung cong)) dan chan cau".
• Adding a wildcard symbol may retrieve word variants: toc thieu sach - thanh ((tung tuan) or (hung tuan)) ((nhung cong) OR (dung cong)) dan chan cau*.