Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, dien thanh
tien thanh » tien thinh, tran thanh, den thanh
canh manh » lanh manh, canh tranh, cach mang
hang cong » dang cong, hang nong, bang cong
manh cua » doanh cua, ban cua
cua hang » cua dang, cua nhung, cua cong
cong dan » cong san, cong tan, huong dan
gian ban » gian bana, gian dan, gian lan

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 hang cong dan gian ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien nhanh) OR (tien thanh)) - canh manh cua hang cong dan gian ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) OR (tien thanh)) - canh manh cua hang cong dan gian ban*.