Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
tinh trang » minh trang, tinh quang, tinh toan
khong cong » thong cong, khong cang, chong cong
hoc thieu » toc thieu, hoc hien
hua khong » hoa khong, cua khong, hoac khong
thanh ban » thanh san, thanh bac, thanh bai
thanh van » thanh san, thanh toan, thanh phan
cong ban » cong bang, cong san, cong tan

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 - ((tinh trang) or (canh tranh)) hua khong cong ban ((thanh ban) OR (thanh van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((tinh trang) OR (canh tranh)) hua khong cong ban ((thanh ban) OR (thanh van)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - ((tinh trang) or (canh tranh)) hua khong cong ban ((thanh ban) OR (thanh van))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((tinh trang) or (canh tranh)) hua khong cong ban ((thanh ban) OR (thanh van))*.