Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
kieu tinh » lieu tinh, diep tinh, bien tinh
cua dung » cua dong, qua dung, cua rung
cua dang » cua cong, cua ban
trong ty » trong ky, trong ly, trong tu
toan cao » toan ban, toan tap
ty toan » ly toan, tap toan, huy toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((kieu tinh) or (trieu tinh)) - hanh tranh ((cua dung) OR (cua dang)) trong ty toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((kieu tinh) OR (trieu tinh)) - hanh tranh ((cua dung) OR (cua dang)) trong ty toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((kieu tinh) or (trieu tinh)) - hanh tranh ((cua dung) OR (cua dang)) trong ty toan cao*".