Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hoc thieu » hoc hien
canh tinh » hanh tinh, manh tinh, canh tranh
san phan » san pham, van phan, sat 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) or (toc thieu)) xanh - canh tinh va ((nhung cong) OR (thong cong)) san phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) xanh - canh tinh va ((nhung cong) OR (thong cong)) san phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (toc thieu)) xanh - canh tinh va ((nhung cong) OR (thong cong)) san phan cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) xanh - canh tinh va ((nhung cong) OR (thong cong)) san phan cau*.