Perhaps you should try some spelling variations:
phuong thao » phuong phap, phuong thuc
thiet tach » chiet tach, thien hach, thuat tach
thanh tung » thanh cong
thao thanh » thai thanh, thanh thanh, thuan thanh
hoc thiet » hoc thieu, hoc thuyet, hoc hien
cua hoang » cua hang, quan hoang, tuan hoang
luan hoan » luan van
thanh chu » thanh chau, thanh cha, thanh thu

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 tach - thanh tung ((cua hoang) or (luan hoan)) phuong thao thanh chu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tach - thanh tung ((cua hoang) OR (luan hoan)) phuong thao thanh chu.
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - thanh tung ((cua hoang) or (luan hoan)) phuong thao thanh chu*.