Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tran » hanh trang, thanh tran, hanh tram
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
tran van » luan van
van dung » van dong, xay dung, tin dung
tac toan » hach toan, tich toan, tac thanh
tam toan » tam than, pham toan, tam thanh
tap toan » tap doan, tap quan, bai toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu xanh - hanh tran van dung cong ((tac toan) or (((tam toan) OR (tap toan)))) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh tran van dung cong ((tac toan) OR (((tam toan) OR (tap toan)))) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - hanh tran van dung cong ((tac toan) or (((tam toan) OR (tap toan)))) cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh tran van dung cong ((tac toan) or (((tam toan) OR (tap toan)))) cao*.