Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chau tinh » cuu tinh, ha tinh, cua tinh
trinh van » trinh han, trinh quan, trinh toan
nhung cau » chung cu, nhung bai, nhu cau
dung cong » dung trong
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap
ho chau » ha chau, ho chu, o chau

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 - hanh trinh van ((nhung cau) or (dung cong)) tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chau tinh - hanh trinh van ((nhung cau) OR (dung cong)) tan toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chau tinh - hanh trinh van ((nhung cau) or (dung cong)) tan toan cau*.