Perhaps you should try some spelling variations:
bang suong » bang song, bang tuong, bang phuong
bang huong » bang phuong, ban huong, bang tuong
hien hanh » dieu hanh
canh manh » lanh manh, canh tranh, cach mang
manh chua » manh cua, tranh chua, benh chua
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan 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 hien hanh - canh manh chua ((bang huong) OR (bang suong)) dan than tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien hanh - canh manh chua ((bang huong) OR (bang suong)) dan than tap*".