Perhaps you should try some spelling variations:
cong nganh » cong ngang, trong nganh, duong nganh
nhung cong » dung cong, thong cong, hang cong
nganh toan » nganh thanh, thanh toan, manh toan
hoc thieu » toc thieu
tranh cua » doanh cua
manh cua » doanh cua, ban cua
toan cau » 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 thieu) or (hoc hien)) tach - canh ((tranh cua) OR (manh cua)) nhung cong nganh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) tach - canh ((tranh cua) OR (manh cua)) nhung cong nganh toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (hoc hien)) tach - canh ((tranh cua) OR (manh cua)) nhung cong nganh toan cau*".