Perhaps you should try some spelling variations:
thien anh » thien danh, tien anh, thien thanh
tien manh » tien anh, tien thanh, tieng anh
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
quang va » quang van, quan va, quang ma
va trong » va truong, va thong, va tuong
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: hoc ((thien anh) or (tien manh)) - nhanh quang va trong cong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (tien manh)) - nhanh quang va trong cong manh toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (tien manh)) - nhanh quang va trong cong manh toan cao*.