Perhaps you should try some spelling variations:
khien tinh » thien tinh, khien thich, bien tinh
hanh trung » thanh trung, hanh trang, manh trung
trung tuan » trung thanh, trung tam, tran tuan
tuan khong » toan khong, tuan phong, thuan phong
khong cong » thong cong, khong cang, chong cong
hien tinh » thien tinh, bien tinh, dien tinh
van thanh » ban thanh, van tuan

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 trung tuan khong cong ((tan tran) or (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien tinh) OR (khien tinh)) - hanh trung tuan khong cong ((tan tran) OR (van thanh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien tinh) OR (khien tinh)) - hanh trung tuan khong cong ((tan tran) or (van thanh)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien tinh) OR (khien tinh)) - hanh trung tuan khong cong ((tan tran) or (van thanh)) cau*.