Perhaps you should try some spelling variations:
tieu trinh » tien trinh, tien thinh, trieu tinh
duong manh » duong van
tieu tinh » trieu tinh, lieu tinh, kieu tinh
tinh tang » tinh trang, tinh sang, tinh bang
tang luan » dung luan
luan bang » luan nang, luan ban, luan tang
cong manh » cong danh, cong thanh, hoang manh
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: theo ((tieu tinh) or (tieu trinh)) - tinh tang luan bang ((cong manh) OR (duong manh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu tinh) OR (tieu trinh)) - tinh tang luan bang ((cong manh) OR (duong manh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu tinh) or (tieu trinh)) - tinh tang luan bang ((cong manh) OR (duong manh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu tinh) or (tieu trinh)) - tinh tang luan bang ((cong manh) OR (duong manh)) toan cao*.