Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
luan chung » luan chinh
doi chieu » doc hieu, doi chi, mot chieu
cua nhung » va nhung
cong tinh » cong trinh, cong vinh, long tinh
ho chieu » theo chieu, hoc thieu, mot chieu
toan cau » toan cao, toan ban, toan tap

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)) sang - hanh trinh ((luan chung) or (cua nhung)) cong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sang - hanh trinh ((luan chung) OR (cua nhung)) cong tinh toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) sang - hanh trinh ((luan chung) or (cua nhung)) cong tinh toan cau*".