Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
lieu tinh » trieu tinh, diep tinh, bien tinh
tuong cua » truong cua, huong cua, thong cua
cong toan » cong tan, cong hoan, cong tuan
khoan cap » khoan cam, khan cap, khoan va
tung cua » trung cua, dung cua, tang cua
khoa cap » khoa cam, khoa tap, khoa can
ho lieu » so lieu, co lieu, ho kieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho lieu tinh - thanh ((tung cua) OR (tuong cua)) nhung cong toan ((khoan cap) or (khoa cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - thanh ((tung cua) OR (tuong cua)) nhung cong toan ((khoan cap) OR (khoa cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho lieu tinh - thanh ((tung cua) OR (tuong cua)) nhung cong toan ((khoan cap) or (khoa cap))".
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - thanh ((tung cua) OR (tuong cua)) nhung cong toan ((khoan cap) or (khoa cap))*.