Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
than sinh » than kinh, nhan sinh, thai sinh
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
sinh cua » manh cua, dinh cuu, sinh va
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (theo tieu)) tinh - than sinh cua ((nhung cong) or (dung cong)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo tieu)) tinh - than sinh cua ((nhung cong) OR (dung cong)) dan than cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo tieu)) tinh - than sinh cua ((nhung cong) or (dung cong)) dan than cau*.