Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
mot trieu » mot chieu, mot tri, mon triet
hanh tang » hanh trang, anh tang, hanh mang
nhan dang » nhan dan, tran dang
phan dang » phan dau, phan cong, nhan dan
cong bai » cuong bai, cong hai, cung bai
bai tao » bai tap, tai tao, ai tao
tao cao » bao cao, toan cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: mot trieu tinh - ((hanh tang) or (((nhan dang) OR (phan dang)))) va nhung cong bai tao cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: mot trieu tinh - ((hanh tang) OR (((nhan dang) OR (phan dang)))) va nhung cong bai tao cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "mot trieu tinh - ((hanh tang) or (((nhan dang) OR (phan dang)))) va nhung cong bai tao cao".
• Adding a wildcard symbol may retrieve word variants: mot trieu tinh - ((hanh tang) or (((nhan dang) OR (phan dang)))) va nhung cong bai tao cao*.