Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » thong cong, hang cong, nhung don
chau tinh » cuu tinh, ha tinh, cac tinh
dung cong » dung trong
cua tinh » cua sinh, va tinh, ha tinh
tan toan » tan tran, tap toan, van toan
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 ((chau tinh) OR (cua tinh)) - hanh trinh luat ((nhung cong) or (dung cong)) tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chau tinh) OR (cua tinh)) - hanh trinh luat ((nhung cong) OR (dung cong)) tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chau tinh) OR (cua tinh)) - hanh trinh luat ((nhung cong) or (dung cong)) tan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chau tinh) OR (cua tinh)) - hanh trinh luat ((nhung cong) or (dung cong)) tan toan cao*.