Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
minh tuan » anh tuan
ho chieu » theo chieu, hoc thieu, doi chieu
van tuan » van quan, van ban, anh tuan
tuan cau » toan cau, quan cau, tuan cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - ((minh tuan) or (hanh trinh)) cua ((nhung cong) OR (thong cong)) van tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((minh tuan) OR (hanh trinh)) cua ((nhung cong) OR (thong cong)) van tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((minh tuan) or (hanh trinh)) cua ((nhung cong) OR (thong cong)) van tuan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((minh tuan) or (hanh trinh)) cua ((nhung cong) OR (thong cong)) van tuan cau*.