Perhaps you should try some spelling variations:
thuat mach » thuat sach, thuat tach, thuyet mach
luc nhanh » luc nhan, luc nganh, luc canh
nhanh hoa » nhanh hoan, thanh hoa, khanh hoa
van thanh » ban thanh, van tuan
thanh van » thanh san, thanh toan, thanh phan
thu mach » thu sach, thu hoach, thuc cach
cuu dong » cuu cong, cuu tong, cuu long
dong luc » nang luc
hai van » thai van, ha van, hai tan
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu mach) OR (thuat mach)) hoc tap, nghien cuu dong luc nhanh hoa hoc xa hai van thanh van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu mach) OR (thuat mach)) hoc tap, nghien cuu dong luc nhanh hoa hoc xa hai van thanh van".
• Adding a wildcard symbol may retrieve word variants: ((thu mach) OR (thuat mach)) hoc tap, nghien cuu dong luc nhanh hoa hoc xa hai van thanh van*.