Perhaps you should try some spelling variations:
hanh dong » anh dong, ha dong
dong thai » duong thai, dong tai, cong thai
mac hanh » sac hanh, bac thanh, cac thanh
hoc mach » hoc sach, hoc cach, hoc tach
hoc mac » hoc ma, hoc may
hoc cac » hoc cao
ngon ly » ngoc ly, ngon lua
ly khi » ly chi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( hoc mac hanh dong thai đong luc ) or ( ((hoc mach) or (hoc cac)) ngon ly khi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( hoc mac hanh dong thai đong luc ) OR ( ((hoc mach) OR (hoc cac)) ngon ly khi đong luc )).
• Adding a wildcard symbol may retrieve word variants: (( hoc mac hanh dong thai đong luc ) or ( ((hoc mach) or (hoc cac)) ngon ly khi đong luc ))*.