Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
duong manh » duong van
hoc thiet » hoc thieu, hoc thuyet, hoc hien
manh toan » thanh toan, anh tuan, tinh toan
ho chiet » ho chieu, ho thiet, hoa thiet
cua dong » chua dong, cua dang, cua nong
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: ((ho chiet) OR (hoc thiet)) tach - hanh tranh ((cua dong) or (cua cong)) duong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chiet) OR (hoc thiet)) tach - hanh tranh ((cua dong) OR (cua cong)) duong manh toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chiet) OR (hoc thiet)) tach - hanh tranh ((cua dong) or (cua cong)) duong manh toan cao*".