Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hanh tranh » canh tranh, hanh trinh, hanh trang
khong cong » thong cong, chong cong, khong con
khong cang » thong cong, hong bang, khong dung
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 (khong cang)) dan than ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien hach - hanh tranh cua ((khong cong) OR (khong cang)) dan than ban".
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - hanh tranh cua ((khong cong) OR (khong cang)) dan than ban*.