Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thien » hoc hien, hoc thieu, hoc thiet
tranh cua » doanh cua, manh cua
cua bang » chua bang, cua ban, cua dang
cong san » cong tac
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 thien thanh - hanh tranh cua bang ((cong san) or (huong dan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien thanh - hanh tranh cua bang ((cong san) OR (huong dan)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thien thanh - hanh tranh cua bang ((cong san) or (huong dan)) toan cao*.