Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
hoc chiet » hoc thiet, hoc nhiet, hoc hien
tranh cua » doanh cua, manh cua
bang cong » bang song, hang cong, dung cong
dang cong » dung cong
dan van » dang van, doan van, dao van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chiet tach - hanh tranh cua ((nhung cong) or (((bang cong) OR (dang cong)))) dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - hanh tranh cua ((nhung cong) OR (((bang cong) OR (dang cong)))) dan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chiet tach - hanh tranh cua ((nhung cong) or (((bang cong) OR (dang cong)))) dan van ban".
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - hanh tranh cua ((nhung cong) or (((bang cong) OR (dang cong)))) dan van ban*.