Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
vien nganh » vien thanh
thong cong » trong cong, tong cong, thong thong
hiem ngan » kim ngan, viem gan
thong cua » thong quan, thong tu, huong cua
cua thong » cua thuong, cua khong, cua tong
van than » van thanh, van thang, van phan
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hiem ngan) or (vien nganh)) - thanh thong cua thong cong ((van than) OR (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hiem ngan) OR (vien nganh)) - thanh thong cua thong cong ((van than) OR (van tuan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hiem ngan) or (vien nganh)) - thanh thong cua thong cong ((van than) OR (van tuan)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hiem ngan) or (vien nganh)) - thanh thong cua thong cong ((van than) OR (van tuan)) cau*.