Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hoc thien » hoc hien, hoc thieu, hoc thiet
tranh cua » doanh cua, manh cua
phan cac » nhan cach, phan lap, phan van
phan dau » phan tu, hang dau

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 thanh - canh tranh cua ((nhung cong) or (thong cong)) dan ((phan cac) OR (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien thanh - canh tranh cua ((nhung cong) OR (thong cong)) dan ((phan cac) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien thanh - canh tranh cua ((nhung cong) or (thong cong)) dan ((phan cac) OR (phan dau))".
• Adding a wildcard symbol may retrieve word variants: hoc thien thanh - canh tranh cua ((nhung cong) or (thong cong)) dan ((phan cac) OR (phan dau))*.