Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
chieu xanh » chieu sach, chieu sang, chieu tinh
kinh thuc » sinh thuc, dinh thuc, hinh thuc
thuc dung » thuoc dung, thuy dung, tuc dung
dung cong » dung trong
cong lang » cong vang, cong luong, cong quang
lang toan » dang toan, lang thang, lang thanh
toan ban » van ban

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 (chieu xanh)) - than kinh thuc dung cong lang toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (chieu xanh)) - than kinh thuc dung cong lang toan ban*.