Perhaps you should try some spelling variations:
vuong doanh » trong doanh, dung doanh, von doanh
trinh luan » trinh luat, trinh quan, trinh han
hang vuong » hoang vuong, hung vuong, hang luong
doi chieu » doc hieu, doi chi, mot chieu
ho chieu » theo chieu, hoc thieu, mot chieu
tinh cua » trinh cua, sinh cua, tinh chat
nhan han » nhan chan, nhan dan, nhan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (doi chieu)) sach - hanh ((tinh cua) or (trinh luan)) hang vuong doanh nhan han~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - hanh ((tinh cua) OR (trinh luan)) hang vuong doanh nhan han.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) sach - hanh ((tinh cua) or (trinh luan)) hang vuong doanh nhan han".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) sach - hanh ((tinh cua) or (trinh luan)) hang vuong doanh nhan han*.