Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hanh tranh » canh tranh, hanh trinh, hanh trang
khong cong » khong cang, chong cong, khong con
thong cong » trong cong, tong cong, thong thong
hoc thien » hoc hien, hoc thieu, hoc thiet
tranh cua » doanh cua, manh cua
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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 hach - hanh tranh cua ((khong cong) or (thong cong)) dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - hanh tranh cua ((khong cong) OR (thong cong)) dan than ban.
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - hanh tranh cua ((khong cong) or (thong cong)) dan than ban*.