Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
hoi hieu » hoi phieu, hoi tieu, moi hieu
mang vua » mang cua, mang va, hang va
manh cua » doanh cua, ban cua
cong hai » cong thai, cong ha, hoang hai
hai toan » bai toan, hai tan, hach toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi hieu lang - hanh ((mang vua) or (manh cua)) trong cong hai toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi hieu lang - hanh ((mang vua) OR (manh cua)) trong cong hai toan tap*.