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
than ban » thanh ban, toan ban, nhuan ban
than man » than ma, thanh san, tran manh

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