Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
hanh tranh » hanh trinh, hanh trang, lanh tranh
hoc thien » hoc hien, hoc thieu, hoc thiet
bang cong » bang song, hang cong, dung cong
dang cong » dung cong
tam than » ban than
than cap » khan cap, thanh lap, thanh cac

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) OR (canh tranh)) cua ((bang cong) or (dang cong)) tam than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien thanh - ((hanh tranh) OR (canh tranh)) cua ((bang cong) OR (dang cong)) tam than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien thanh - ((hanh tranh) OR (canh tranh)) cua ((bang cong) or (dang cong)) tam than cap".
• Adding a wildcard symbol may retrieve word variants: hoc thien thanh - ((hanh tranh) OR (canh tranh)) cua ((bang cong) or (dang cong)) tam than cap*.