Perhaps you should try some spelling variations:
truong huong » truong phuong, truong thuong, truong vuong
trung huong » trung uong, trung duong, trung hung
chiet tach » chieu sach
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
dan toan » van toan, dan than, manh toan
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 ((chiet tach) or (chieu xanh)) - hanh tranh cua ((trung huong) OR (truong huong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chiet tach) OR (chieu xanh)) - hanh tranh cua ((trung huong) OR (truong huong)) dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chiet tach) or (chieu xanh)) - hanh tranh cua ((trung huong) OR (truong huong)) dan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((chiet tach) or (chieu xanh)) - hanh tranh cua ((trung huong) OR (truong huong)) dan toan cao*.