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, bang suong, bang tuong
canh manh » lanh manh, canh tranh, cach mang
ban huong » bang phuong, ban hang, anh huong
manh cua » doanh cua, ban cua
dan chan » dan gian, dan ca, van chat
chan tap » han tap, phan tap, chan ta

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) or (ban huong)) dan chan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (tien thanh)) - canh manh cua ((bang huong) OR (ban huong)) dan chan 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) or (ban huong)) dan chan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) OR (tien thanh)) - canh manh cua ((bang huong) or (ban huong)) dan chan tap*.