Perhaps you should try some spelling variations:
khien tinh » thien tinh, khien thich, bien tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
thong cong » trong cong, thong thong, phong chong
hoc khien » hoc hien, hoc nghien, hoc thieu
tranh cua » doanh cua, manh cua
tong cong » trong cong, cong cong, dung cong
hach toan » thanh toan, manh toan
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 khien tinh - hanh tranh cua ((thong cong) or (tong cong)) hach toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc khien tinh - hanh tranh cua ((thong cong) OR (tong cong)) hach toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc khien tinh - hanh tranh cua ((thong cong) or (tong cong)) hach toan cau*.