Perhaps you should try some spelling variations:
thanh cham » thanh pham, hanh cham, thanh cha
hieu lang » chieu sang, hieu quang, nhieu tang
hanh mang » nhanh mang, hanh trang, nhanh lang
lan thong » lan thuong, ban thong, van thong
thong dat » thong dan, thong dam, thong day
dat thanh » dao thanh, dat khanh, dang thanh
mang lan » mang lai, mang lam, hang luan

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 (hieu qua)) - hanh mang lan thong thong dat thanh cham~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (hieu qua)) - hanh mang lan thong thong dat thanh cham*.