Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thong cong » trong cong, tong cong, thong thong
hiem ngan » kim ngan, viem gan
canh tinh » hanh tinh, manh tinh, canh tranh
dung cong » dung trong
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu
tinh va » tich va, trinh van, trinh vat

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 xanh) or (hiem ngan)) - canh tinh va ((thong cong) or (dung cong)) dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hiem ngan)) - canh tinh va ((thong cong) OR (dung cong)) dan phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hiem ngan)) - canh tinh va ((thong cong) or (dung cong)) dan phan cau*.