Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hien xanh » hien hanh, chieu xanh, hien khanh
trong san » trong cac, cong san, dong san
sang cua » mang cua, song cua, hang cua
song qua » song cua, duong qua, thong qua
san than » sang than, san thanh, ban than
than cap » khan cap, thanh lap, thanh cac

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 xanh) OR (hien nhanh)) - nang ((sang cua) or (song qua)) dung trong san than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - nang ((sang cua) OR (song qua)) dung trong san than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien nhanh)) - nang ((sang cua) or (song qua)) dung trong san than cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (hien nhanh)) - nang ((sang cua) or (song qua)) dung trong san than cap*.