Perhaps you should try some spelling variations:
thanh tung » thanh cong
quan nhung » qua nhung, cua nhung, luan chung
lieu tinh » trieu tinh, diep tinh, bien tinh
tung quan » tuong quan, trung quan, dung quan
cong toan » cong hoan, cong tuan, cong doan
khoan cap » khoan cam, khan cap, khoan va
cong tan » cong tac, cong san, cong thanh
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 quan nhung ((cong toan) OR (cong tan)) ((khoan cap) or (khoa cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - thanh tung quan nhung ((cong toan) OR (cong tan)) ((khoan cap) OR (khoa cap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho lieu tinh - thanh tung quan nhung ((cong toan) OR (cong tan)) ((khoan cap) or (khoa cap))*".