Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hien tach » thien hach, chiet tach, vien bach
trinh vat » trinh van, trinh luat, sinh vat
vat nhung » va nhung, vap nhung, vai nhung
manh toan » thanh toan, anh tuan, tinh toan
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien tach - hanh trinh vat nhung cong ((manh toan) or (van toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tach - hanh trinh vat nhung cong ((manh toan) OR (van toan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien tach - hanh trinh vat nhung cong ((manh toan) or (van toan)) cau*.