Perhaps you should try some spelling variations:
bien tinh » bi tinh, diep tinh, ban tinh
manh hung » anh huong
dung cong » dung trong
yen tinh » tuyen tinh
hung cua » huong cua, chung cua, khung cua
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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 ((bien tinh) OR (yen tinh)) - manh hung cua dung cong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((bien tinh) OR (yen tinh)) - manh hung cua dung cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((bien tinh) OR (yen tinh)) - manh hung cua dung cong dan toan cao*.