Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
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
cong than » cong thang, cong tan, cong thai
phan lap » phan dau

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) OR (cong thanh)) phan lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien danh - tinh toan thuc hung ((cong than) OR (cong thanh)) phan lap".
• Adding a wildcard symbol may retrieve word variants: hoc thien danh - tinh toan thuc hung ((cong than) OR (cong thanh)) phan lap*.