Perhaps you should try some spelling variations:
hanh phang » khanh phong, nhanh thang, thanh thang
hieu lang » chieu sang, hieu quang, nhieu tang
hanh phan » thanh phan, anh phan, hanh han
thong dan » thong van, tuong dan, thong den
va thong » va thuong, va phuong, he thong
toan cao » toan tap
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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 - ((hanh phang) or (hanh phan)) va thong thong dan ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((hanh phang) OR (hanh phan)) va thong thong dan ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((hanh phang) or (hanh phan)) va thong thong dan ((toan cao) or (toan ban))*.