Perhaps you should try some spelling variations:
trinh trong » trinh truong, tranh trong, trinh trung
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
nam ngang » nam nang, nam ngan, nam thang
nam nganh » nam danh, nam thanh, cac nganh
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
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 trong ((nam ngang) OR (nam nganh)) cong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - trinh trong ((nam ngang) OR (nam nganh)) cong manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chieu sach)) - trinh trong ((nam ngang) OR (nam nganh)) cong manh toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu sach)) - trinh trong ((nam ngang) OR (nam nganh)) cong manh toan cao*.