Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hien sang » hien trang, khien bang, chieu sang
trinh thi » trinh tai, dinh thi, trinh tu
thi nhung » thi nang, thi hong, thi huong
san toan » van toan, dan toan, manh toan

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 sang - hanh trinh thi nhung cong ((san toan) or (tinh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sang - hanh trinh thi nhung cong ((san toan) OR (tinh toan)) cau*.