Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
hoc thieu » toc thieu, hoc hien
luan lang » luan nang, quan lang, lan lang
lang cong » dang cong, bang cong, hang cong
ho chieu » theo chieu, doi chieu, mot chieu
cong tac » cong ty
phan tai » pham tai, nhan tai, phan thi
han tai » hang tai, nhan tai, van tai

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 (hoc thieu)) sach - canh tranh luan lang cong tac ((phan tai) or (han tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - canh tranh luan lang cong tac ((phan tai) OR (han tai)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) sach - canh tranh luan lang cong tac ((phan tai) or (han tai))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) sach - canh tranh luan lang cong tac ((phan tai) or (han tai))*.