Perhaps you should try some spelling variations:
thanh pham » thanh phan, thanh pho, thanh hai
cong thanh » dong thanh, cong trinh, cong tan
hoc chieu » hoc thieu, ho chieu, hoc dieu
thuc hung » thuc chung, thuc nhung, thuc cung
thuc dung » thuoc dung, thuy dung, tuc dung
pham cac » phan cac, pham ca, pham can

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (hoc hien)) xanh - tinh toan ((thuc hung) OR (thuc dung)) cong thanh pham cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc hien)) xanh - tinh toan ((thuc hung) OR (thuc dung)) cong thanh pham cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (hoc hien)) xanh - tinh toan ((thuc hung) OR (thuc dung)) cong thanh pham cac".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc hien)) xanh - tinh toan ((thuc hung) OR (thuc dung)) cong thanh pham cac*.