Perhaps you should try some spelling variations:
thiet toan » thien toan, thuat toan, hieu toan
dang cong » dung cong
dan thiet » luan thiet, toan thiet, doan thien
hung phan » huong phan, nhung phan, dung phan
cong dan » cong san, cong tan, huong dan
tinh van » trinh van, dinh van, tinh va
van hung » van dung, manh hung, van duong
ki dang » ki nang, ky dang, kien dang
tu van » tu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ki dang cong dan thiet toan ) or ( tinh van hung phan tu van ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ki dang cong dan thiet toan ) OR ( tinh van hung phan tu van ))*.