Perhaps you should try some spelling variations:
tranh hoac » thanh hoach, thanh hoa, trinh hoa
hoac khong » hoa khong, hoc khong, hay khong
khong cong » thong cong, khong cang, chong cong
hoc thien » hoc hien, hoc tien, hoan thien
hoc thieu » toc thieu, hoc hien
hoc thiet » hoc thuyet, hoc hien, toc thieu
cong doan » cong dan, cong hoan, dong doanh
doan phan » doanh phan, toan phan, dan phan
phan cac » nhan cach, phan dau, 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) OR (hoc thieu))) or (hoc thiet)) thanh - canh tranh hoac khong cong doan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((hoc thien) OR (hoc thieu))) OR (hoc thiet)) thanh - canh tranh hoac khong cong doan phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((hoc thien) OR (hoc thieu))) or (hoc thiet)) thanh - canh tranh hoac khong cong doan phan cac".
• Adding a wildcard symbol may retrieve word variants: ((((hoc thien) OR (hoc thieu))) or (hoc thiet)) thanh - canh tranh hoac khong cong doan phan cac*.