Perhaps you should try some spelling variations:
duong cong » dung cong, luong cong, duong trong
lieu tinh » trieu tinh, diep tinh, bien tinh
trinh van » trinh han, trinh quan, trinh toan
trinh va » trinh vat, trinh ve, trinh vi
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap
co lieu » cot lieu, co hieu, so lieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: co lieu tinh - canh ((trinh va) OR (trinh van)) duong cong tan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co lieu tinh - canh ((trinh va) OR (trinh van)) duong cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: co lieu tinh - canh ((trinh va) OR (trinh van)) duong cong tan toan cao*.