Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
thanh tung » thanh cong
hieu lang » chieu sang, hieu quang, nhieu tang
cua nhung » va nhung
huong ban » huong dan, huong ben, huong lan
tung cua » trung cua, tuong cua, dung cua
ban toan » bai toan, ban than, van 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 ((hieu lang) or (chinh sach)) - thanh tung cua nhung huong ban toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chinh sach)) - thanh tung cua nhung huong ban toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (chinh sach)) - thanh tung cua nhung huong ban toan cao*.