Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
nhung cong » dung cong, thong cong, hang cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tuong dan » huong dan, tung dan, xuong dan
dan nhung » ban nhung, dap nhung, san nhung
cong dang » cong dong, cong dan, cong dung
thanh lap » thanh san, phan lap, thanh van
thanh hai » thanh phan, thanh hoa, thanh san
ho thiet » hoa thiet, so thiet, hoc thieu

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 (ho thiet)) tach - thanh tuong dan nhung cong dang ((thanh lap) OR (thanh hai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (ho thiet)) tach - thanh tuong dan nhung cong dang ((thanh lap) OR (thanh hai)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thiet) or (ho thiet)) tach - thanh tuong dan nhung cong dang ((thanh lap) OR (thanh hai))".
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) or (ho thiet)) tach - thanh tuong dan nhung cong dang ((thanh lap) OR (thanh hai))*.