Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
hoc thien » hoc hien, hoc thieu, hoc thiet
toan thuc » toan hoc, dan thuc, nhan thuc
thuc hung » thuc chung, thuc nhung, thuc dung
hung cong » nhung cong, hung cuong, phung cong
than phan » thanh phan, toan phan, thanh pham

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien danh - tinh toan thuc hung cong ((than phan) or (thanh san)) lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien danh - tinh toan thuc hung cong ((than phan) OR (thanh san)) lap.
• Adding a wildcard symbol may retrieve word variants: hoc thien danh - tinh toan thuc hung cong ((than phan) or (thanh san)) lap*.