Perhaps you should try some spelling variations:
dong thanh » truong thanh
thanh phan » thanh pho, thanh san, thanh toan
hoc thieu » toc thieu
toan thuc » toan hoc, dan thuc, nhan thuc
thuc hung » thuc chung, thuc nhung, thuc dung
hung dong » huong dong, vung dong, dung dong
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 thieu) or (hoc hien)) anh - tinh toan thuc hung dong thanh phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) anh - tinh toan thuc hung dong thanh phan lap.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) anh - tinh toan thuc hung dong thanh phan lap*.