Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
van quang » van quan, tran quang, van tuan
cong tinh » cong trinh, cong vinh, long tinh
cac tinh » dac tinh, cuu tinh, ban 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 ((cac 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 ((cac tinh) OR (ha tinh)) - hanh trinh ((van nang) OR (van quang)) cong tinh toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((cac tinh) or (ha tinh)) - hanh trinh ((van nang) or (van quang)) cong tinh toan cau*.