Perhaps you should try some spelling variations:
chon chinh » cho chinh, thon chinh, chinh chinh
tranh cua » doanh cua
ho chinh » hoc chinh, cho chinh, hoa chinh
manh cua » doanh cua, ban cua
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai 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 chinh) or (chon chinh)) sach - hanh ((tranh cua) or (manh cua)) trong cong tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chinh) OR (chon chinh)) sach - hanh ((tranh cua) OR (manh cua)) trong cong tap toan cao.
• Adding a wildcard symbol may retrieve word variants: ((ho chinh) or (chon chinh)) sach - hanh ((tranh cua) or (manh cua)) trong cong tap toan cao*.