Perhaps you should try some spelling variations:
doanh hanh » doanh thanh, doanh anh, doanh doanh
hoc chieu » hoc thieu, ho chieu, hoc hien
va thanh » gia thanh, ban thanh, va tinh
cong dan » cong san, cong tan, huong dan
dan hanh » dang hanh, dan khanh, dan thanh
hanh van » thanh van, khanh van, hanh san
hanh va » hang va, hanh vi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) OR (toc thieu)) sang - doanh hanh va thanh cong dan hanh van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (toc thieu)) sang - doanh hanh va thanh cong dan hanh van*".