Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
tranh pho » thanh pho, trang cho, anh pho
pho thong » he thong
hoc dieu » hoc thieu, hoc hien
cong tap » cuong tap, cong tac, cong tan
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: ((hoc dieu) or (toc thieu)) tinh - canh tranh pho thong cong tap ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc dieu) OR (toc thieu)) tinh - canh tranh pho thong cong tap ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc dieu) or (toc thieu)) tinh - canh tranh pho thong cong tap ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: ((hoc dieu) or (toc thieu)) tinh - canh tranh pho thong cong tap ((toan cau) OR (toan cao))*.