Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
tong cong » trong cong, dung cong, dang cong
cong cong » cong dong, trong cong, dung cong
dang toan » dang tran, dan toan, dung toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (hoc thieu)) sang - canh tranh cua ((tong cong) OR (cong cong)) dang toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc thieu)) sang - canh tranh cua ((tong cong) OR (cong cong)) dang toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (hoc thieu)) sang - canh tranh cua ((tong cong) OR (cong cong)) dang toan tap".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (hoc thieu)) sang - canh tranh cua ((tong cong) OR (cong cong)) dang toan tap*.