Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, dien thanh
tien thanh » tien thinh, tran thanh, den thanh
bang huong » bang phuong, ban huong, bang suong
canh manh » lanh manh, canh tranh, cach mang
manh cua » doanh cua, ban cua
cua bang » chua bang, cua ban, cua dang
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 nhanh) OR (tien thanh)) - canh manh cua bang huong dan than tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien nhanh) OR (tien thanh)) - canh manh cua bang huong dan than tap*".