Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
tinh trang » minh trang, tinh quang, tinh toan
qua chuong » qua chung, qua cong, cua chung
hoc thieu » toc thieu, hoc hien
hua chong » hua khong, ngua chong, cua cong
cong ban » cong bang, cong san, cong tan
ban hanh » ban hang
hanh van » thanh van, khanh van, hanh va

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