Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
hanh mang » nhanh mang, hanh trang, nhanh lang
toc hieu » toc thieu, doc hieu, hoc thieu
mang dan » tang dan, dang dan, mang dat
dan dung » van dung, tin dung, ap dung
dung dat » dung va, dung tai
dung lam » dung luan, dung tai, dung ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu lang - hanh mang dan dung ((dung dat) or (dung lam)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu lang - hanh mang dan dung ((dung dat) OR (dung lam)) phan tu.
• Adding a wildcard symbol may retrieve word variants: toc hieu lang - hanh mang dan dung ((dung dat) or (dung lam)) phan tu*.