Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
vang toan » van toan, quang toan, vang trang
dang toan » dang tran, dan toan, dung toan
hoc dieu » hoc thieu

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 (hoc hien)) xanh - hanh tranh cua nhung cong ((vang toan) OR (dang toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc dieu) OR (hoc hien)) xanh - hanh tranh cua nhung cong ((vang toan) OR (dang toan)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc dieu) or (hoc hien)) xanh - hanh tranh cua nhung cong ((vang toan) OR (dang toan)) cau*".