Perhaps you should try some spelling variations:
phuong thong » phuong trong, thong thong, phuong hoang
thanh tung » thanh cong
cac phuong » cac truong
thong dan » thong van, tuong dan, thong den
hoc dien » hoc hien, hoc vien, hoc dieu
dien anh » tieng anh, dien dan
dan khan » dan khanh, dan chan, dan than
khan cap » khan ap, than cap, khoan cam

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dien anh - ((thanh tung) OR (canh tranh)) cac phuong thong dan khan cap~.
• Adding a wildcard symbol may retrieve word variants: hoc dien anh - ((thanh tung) or (canh tranh)) cac phuong thong dan khan cap*.