Perhaps you should try some spelling variations:
hanh truong » hanh trong, anh truong, manh truong
chieu sang » chieu sach, chieu xanh, hieu lang
nhieu tang » hieu lang, nhiet nang
truong cao » truong dai
hang cong » dang cong, hang nong, bang cong
dien dan » hien dai, vien dai, gian dan
cao hang » cao dang, cao tang, cao bang
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) OR (((nhieu tang) OR (dien dan)))) - hanh truong cao hang cong dan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) OR (((nhieu tang) OR (dien dan)))) - hanh truong cao hang cong dan van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) OR (((nhieu tang) OR (dien dan)))) - hanh truong cao hang cong dan van ban*.