Perhaps you should try some spelling variations:
cong tuong » cong thuong, cong truong, cong trong
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh dong » anh dong, ha dong
tuong tac » cong tac, luong tai, tuong lai
dong cua » dung cua, cong cua, huong cua
tac toan » tap toan, tam toan, hach toan
toan ban » van ban

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 xanh - hanh dong cua cong tuong tac toan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh dong cua cong tuong tac toan ban*.