Perhaps you should try some spelling variations:
trinh trung » trinh truong, trinh trong, sinh trung
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
tam ngan » nam ngan, toan ngan, nam nganh
toan cao » toan ban, toan tap

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 sang) or (chieu sach)) - trinh trung ((tam ngan) OR (tai ngan)) cong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - trinh trung ((tam ngan) OR (tai ngan)) cong manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chieu sach)) - trinh trung ((tam ngan) OR (tai ngan)) cong manh toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu sach)) - trinh trung ((tam ngan) OR (tai ngan)) cong manh toan cao*.