Perhaps you should try some spelling variations:
phuong manh » phuong anh, phuong danh, phuong hanh
thiet tach » chiet tach, thien hach, thuat tach
phung manh » hung manh, nhung manh, phung minh
hoc thiet » hoc thieu, hoc thuyet, hoc hien
manh tung » manh hung, thanh tung
toan ban » van ban
tung ap » tang ap, tung dan, tung bay
ap dung » xay dung, van dung

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tach - manh tung ap dung ((phuong manh) OR (phung manh)) toan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - manh tung ap dung ((phuong manh) or (phung manh)) toan ban*.