Perhaps you should try some spelling variations:
luan tuong » luan luong, luat thuong, xuan truong
luan thong » luan phong, luat thong, xuan thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
chau tinh » cuu tinh, ha tinh, cua tinh
hanh tang » hanh trang, anh tang, hanh mang
cuong tap » luong tap, cong tac, luong tai
tap toan » tap doan, tap quan, bai 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: ho ((hieu manh) or (chau tinh)) - hanh tang ((luan thong) OR (luan tuong)) cuong tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chau tinh)) - hanh tang ((luan thong) OR (luan tuong)) cuong tap toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (chau tinh)) - hanh tang ((luan thong) OR (luan tuong)) cuong tap toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chau tinh)) - hanh tang ((luan thong) OR (luan tuong)) cuong tap toan cao*.