Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
duong cong » dung cong, duong trong, trong cong
luong cong » dung cong, trong cong, cong cong
manh toan » thanh toan, anh tuan, tinh toan
hien anh » hien hanh, thien anh, dien anh
toan cau » toan cao, toan ban, toan tap

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 anh - hanh trinh ky ((duong cong) or (luong cong)) manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien anh - hanh trinh ky ((duong cong) OR (luong cong)) manh toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien anh - hanh trinh ky ((duong cong) or (luong cong)) manh toan cau*.