Perhaps you should try some spelling variations:
nhung cuong » nhung cong, hung cuong, nhung chong
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
cuong bai » uong bi, cuong ma
ho trieu » mot trieu, 25 trieu, ho chieu
30 trieu » 25 trieu
tang cua » mang cua, hang cua, tang luan
bai toan » bai tap
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 trieu) OR (30 trieu)) tinh - hanh tang cua nhung cuong bai toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho trieu) OR (30 trieu)) tinh - hanh tang cua nhung cuong bai toan cao".
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) OR (30 trieu)) tinh - hanh tang cua nhung cuong bai toan cao*.