Perhaps you should try some spelling variations:
thong doan » thong dan, trong doanh, thong hoang
hoc thiet » hoc thuyet, hoc hien, toc thieu
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
hua khong » cua khong, hoac khong, phuc khong
hoa khong » khoi khong, hoa cong, he khong
doan phan » doanh phan, toan phan, dan phan
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 thiet) or (hoc thieu)) danh - canh manh ((hua khong) OR (hoa khong)) thong doan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (hoc thieu)) danh - canh manh ((hua khong) OR (hoa khong)) thong doan phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thiet) or (hoc thieu)) danh - canh manh ((hua khong) OR (hoa khong)) thong doan phan dau".
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) or (hoc thieu)) danh - canh manh ((hua khong) OR (hoa khong)) thong doan phan dau*.