Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
dong cong » duong cong, dung cong, dang cong
hach toan » thanh toan, manh toan
ho chieu » theo chieu, hoc thieu, doi chieu
doc hieu » toc thieu, hoc thieu, hoc hien
cua dong » chua dong, cua cong, cua dang
tac toan » tap toan, tam toan, tich 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) or (doc hieu)) xanh - hanh trinh cua dong cong ((tac toan) or (hach toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doc hieu)) xanh - hanh trinh cua dong cong ((tac toan) OR (hach toan)) cao.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doc hieu)) xanh - hanh trinh cua dong cong ((tac toan) or (hach toan)) cao*.