Perhaps you should try some spelling variations:
thien tinh » khien tinh, thien minh, trien tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
chuyen tap » chuyen tay, chuyen tiep, chuyen tham
tien tinh » tien thinh, tien trinh, trien tinh
tranh cua » doanh cua, manh cua
nhung van » nhung bai, nhung cau, thong van
cua dang » cua cong, cua ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien tinh) OR (tien tinh)) - hanh tranh cua dang ((nhung van) or (phung van)) chuyen tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien tinh) OR (tien tinh)) - hanh tranh cua dang ((nhung van) OR (phung van)) chuyen tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien tinh) OR (tien tinh)) - hanh tranh cua dang ((nhung van) or (phung van)) chuyen tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien tinh) OR (tien tinh)) - hanh tranh cua dang ((nhung van) or (phung van)) chuyen tap*.