Perhaps you should try some spelling variations:
thanh tung » thanh cong
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
cao trong » cao truong, cay trong, tao trong
tung cao » nung cao, truong cao, trung cap
cong san » cong tac
san than » sang than, san thanh, ban than
than tap » toan tap, han tap, phan tap

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 - thanh tung cao trong cong san than tap~.
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - thanh tung cao trong cong san than tap*.