Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chu tinh » chau tinh, chua tinh, chu tich
cong huy » cuong huy, dong huy, cong quy
huy toan » huy tran, huu toan, huy hoang
toan tap » toan ban
vi dung » va dung, vi dong, viet dung
vi ung » va ung, vi luong, vi trung

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu tinh) or (cuu tinh)) - hanh trinh ((vi dung) OR (vi ung)) cong huy toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu tinh) OR (cuu tinh)) - hanh trinh ((vi dung) OR (vi ung)) cong huy toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu tinh) or (cuu tinh)) - hanh trinh ((vi dung) OR (vi ung)) cong huy toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chu tinh) or (cuu tinh)) - hanh trinh ((vi dung) OR (vi ung)) cong huy toan tap*.