Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, nhung don
hien sach » dien sach, thien hach, chieu sach
kien sach » dien sach, vien bach, kien mac
hang cong » dang cong, hang nong, bang cong
vong tuan » vuong tuan, cong tuan, hoang tuan
tuan bang » tuan dang, tuan hoang, thuat bang
trang va » tran van, hang 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 ((hien sach) OR (kien sach)) - hanh trang va ((nhung cong) or (hang cong)) vong tuan bang~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien sach) OR (kien sach)) - hanh trang va ((nhung cong) OR (hang cong)) vong tuan bang.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien sach) OR (kien sach)) - hanh trang va ((nhung cong) or (hang cong)) vong tuan bang".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien sach) OR (kien sach)) - hanh trang va ((nhung cong) or (hang cong)) vong tuan bang*.