Perhaps you should try some spelling variations:
thuc chung » thuc cung, thuc nhung, thung chung
chung cong » nhung cong, chong cong, phung cong
hoc thieu » hoc hien
toan thuc » toan hoc, dan thuc, nhan thuc
cong tan » cong tac, cong san, cong thanh
phan cac » nhan cach, phan lap, phan van
phan dau » phan tu, hang 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 (toc thieu)) anh - tinh toan thuc chung cong tan ((phan cac) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) anh - tinh toan thuc chung cong tan ((phan cac) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) anh - tinh toan thuc chung cong tan ((phan cac) or (phan dau))*.