Perhaps you should try some spelling variations:
thien dang » thien bang, thien danh, thien cong
thien nang » thien bang, trien nang, thien cong
nhung cong » dung cong, thong cong, hang cong
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, huong dan
phan cau » phan dau, phan cac, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien dang) OR (thien nang)) - canh tranh va nhung cong dan ((phan cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien dang) OR (thien nang)) - canh tranh va nhung cong dan ((phan cau) OR (phan tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien dang) OR (thien nang)) - canh tranh va nhung cong dan ((phan cau) or (phan tu))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien dang) OR (thien nang)) - canh tranh va nhung cong dan ((phan cau) or (phan tu))*.