Perhaps you should try some spelling variations:
triet tinh » trieu tinh, trien tinh, trien kinh
dang thanh » dong thanh, hoang thanh, quang thanh
nhung cong » dung cong, thong cong, hang cong
mao triet » tao thiet, va triet, bo triet
dang hanh » ban hanh, dang van, dang hung
cong vang » cong lang, cong quang, cong ngang
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: mao triet tinh - ((dang thanh) or (dang hanh)) va nhung cong vang ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: mao triet tinh - ((dang thanh) OR (dang hanh)) va nhung cong vang ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "mao triet tinh - ((dang thanh) or (dang hanh)) va nhung cong vang ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: mao triet tinh - ((dang thanh) or (dang hanh)) va nhung cong vang ((toan cau) OR (toan cao))*.