Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
nhung cong » dung cong, thong cong, hang cong
dang thanh » dong thanh, dang hanh, hoang thanh
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 hai
so thiet » soc thiet, hoa thiet, tao thiet

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 (so thiet)) tach - thanh tuong dan nhung cong dang thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (so thiet)) tach - thanh tuong dan nhung cong dang thanh lap.
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) or (so thiet)) tach - thanh tuong dan nhung cong dang thanh lap*.