Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
doanh luan » doanh nhan
hoc thien » hoc hien, hoc thieu, hoc thiet
hang cong » dang cong, hang nong, bang cong
thanh lap » thanh san, phan lap, thanh hai
cong dan » cong san, cong tan, huong dan
chan lap » phan lap, dan lap, phan lan

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