Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh trang » thanh trung, minh trang, tinh trang
hanh trinh » hanh chinh
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
cua thong » cua thuong, cua khong, cua tong
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than ban » thanh ban, toan ban, than man

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