Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
dan than » dan chan, ban than, van than
van quan » van ban

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