Perhaps you should try some spelling variations:
cong ngang » cong nhan, cong lang, cong nong
cong quang » luong quang, thong quang, duong quang
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
cac tinh » dac tinh, cuu tinh, ban tinh
manh cua » doanh cua, ban cua
toan ban » van ban
ha tinh » va tinh, may tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((cac tinh) or (ha tinh)) - canh manh cua nhung ((cong ngang) OR (cong quang)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((cac tinh) OR (ha tinh)) - canh manh cua nhung ((cong ngang) OR (cong quang)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((cac tinh) or (ha tinh)) - canh manh cua nhung ((cong ngang) OR (cong quang)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((cac tinh) or (ha tinh)) - canh manh cua nhung ((cong ngang) OR (cong quang)) toan ban*.