Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
kieu tinh » lieu tinh, trieu tinh, diep tinh
dung cong » dung trong
thi kieu » thi kiem, thi dieu, thi kim
tranh va » tranh van, trang va, trinh va
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: thi kieu tinh - canh tranh va ((nhung cong) OR (dung cong)) tan ((phan cau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thi kieu tinh - canh tranh va ((nhung cong) OR (dung cong)) tan ((phan cau) OR (phan cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thi kieu tinh - canh tranh va ((nhung cong) OR (dung cong)) tan ((phan cau) or (phan cac))".
• Adding a wildcard symbol may retrieve word variants: thi kieu tinh - canh tranh va ((nhung cong) OR (dung cong)) tan ((phan cau) or (phan cac))*.