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
tinh manh » tinh mach, tinh thanh, trinh minh
manh hung » anh huong
hung phan » huong phan, nhung phan, dung phan
cong dan » cong san, cong tan, huong dan
phan thi » pham thi, tran thi, phan tu
ki dang » ki nang, ky dang, kien dang
thi van » thi lan, thi hanh, thi nang

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 manh hung phan thi van ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ki dang cong dan thiet toan ) OR ( tinh manh hung phan thi van ))*.