Perhaps you should try some spelling variations:
chung cong » nhung cong, chong cong, phung cong
trinh quan » tinh quang, trinh luat, trinh han
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
cua chung » cua nhung, luan chung, luat chung
trinh san » trinh han, trinh toan, trinh luan
manh cua » doanh cua, ban cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo tieu) or (hoc thieu)) sach - canh manh cua chung cong ((trinh san) OR (trinh quan)) lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (hoc thieu)) sach - canh manh cua chung cong ((trinh san) OR (trinh quan)) lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo tieu) or (hoc thieu)) sach - canh manh cua chung cong ((trinh san) OR (trinh quan)) lap".
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (hoc thieu)) sach - canh manh cua chung cong ((trinh san) OR (trinh quan)) lap*.