Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, mot chieu
minh tuan » anh tuan
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, mot chieu
cong van » cong vang, cong san, song van
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) OR (doi chieu)) sach - ((minh tuan) or (hanh trinh)) cua nhung cong van tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - ((minh tuan) OR (hanh trinh)) cua nhung cong van tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) sach - ((minh tuan) or (hanh trinh)) cua nhung cong van tuan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) sach - ((minh tuan) or (hanh trinh)) cua nhung cong van tuan cau*.