Perhaps you should try some spelling variations:
doanh luan » doanh nhan
hanh doanh » hang doanh, chinh doanh, doanh doanh
luan nhung » luan chung, luan hung, quan nhung
cong thanh » cong trinh, cong tan, truong thanh
dong thanh » truong thanh
hoc dieu » hoc thieu
san ban » sang ban, van ban, can ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc dieu) or (hoc hien)) sang - hanh doanh luan nhung ((cong thanh) OR (dong thanh)) san ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc dieu) OR (hoc hien)) sang - hanh doanh luan nhung ((cong thanh) OR (dong thanh)) san ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc dieu) or (hoc hien)) sang - hanh doanh luan nhung ((cong thanh) OR (dong thanh)) san ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc dieu) or (hoc hien)) sang - hanh doanh luan nhung ((cong thanh) OR (dong thanh)) san ban*.