Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
luan thong » luan phong, luan tuong, luat thong
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, nhieu tang, hieu van
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
cong dac » cong tac, cong dan, cong cac
dac nhan » cac nhan, danh nhan, ca nhan
nhan cap » khan cap, than cap, nhan cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu lang) OR (hieu quang)) - hanh tang luan thong cong dac nhan cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu lang) OR (hieu quang)) - hanh tang luan thong cong dac nhan cap".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) OR (hieu quang)) - hanh tang luan thong cong dac nhan cap*.