Perhaps you should try some spelling variations:
khien tinh » thien tinh, khien thich, bien tinh
hanh trang » thanh trung, hanh trinh, minh trang
nhung cong » dung cong, thong cong, hang cong
hien tinh » thien tinh, bien tinh, dien tinh
cua nhung » va nhung
cong vinh » cong trinh, trong vinh, cong viec
vinh toan » tinh toan, hinh toan, minh 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 ((hien tinh) OR (khien tinh)) - ((hanh trang) or (canh tranh)) cua nhung cong vinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien tinh) OR (khien tinh)) - ((hanh trang) OR (canh tranh)) cua nhung cong vinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien tinh) OR (khien tinh)) - ((hanh trang) or (canh tranh)) cua nhung cong vinh toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien tinh) OR (khien tinh)) - ((hanh trang) or (canh tranh)) cua nhung cong vinh toan cau*.