Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chau tinh » cuu tinh, cua tinh, cac tinh
van quang » van quan, tran quang, van tuan
cong tinh » cong trinh, cong vinh, long tinh
van nang » van ban, van dong, van dung
toan cau » toan cao, toan ban, toan tap
ha tinh » va tinh, may tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chau tinh) OR (ha tinh)) - hanh trinh ((van nang) or (van quang)) cong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chau tinh) OR (ha tinh)) - hanh trinh ((van nang) OR (van quang)) cong tinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chau tinh) OR (ha tinh)) - hanh trinh ((van nang) or (van quang)) cong tinh toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chau tinh) OR (ha tinh)) - hanh trinh ((van nang) or (van quang)) cong tinh toan cau*.