Perhaps you should try some spelling variations:
chinh xuan » chinh luan, chinh ngan, dinh xuan
thuat mach » thuat sach, thuat tach, thuyet mach
xuan thong » xuat thong, xuan thang, xuan truong
thong cong » trong cong, tong cong, thong thong
thuat tac » thuat tach, thuat tao, thuat tai
san van » luan van, tran van, dang van
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((thuat mach) or (thuat tac)) - hanh chinh xuan thong cong ((san van) or (tan van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((thuat mach) OR (thuat tac)) - hanh chinh xuan thong cong ((san van) OR (tan van)) ban.
• Adding a wildcard symbol may retrieve word variants: ho ((thuat mach) or (thuat tac)) - hanh chinh xuan thong cong ((san van) or (tan van)) ban*.