Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
dan tai » van tai, dan thi, han tai
va chat » van chat, va phat, cao chat
ve chat » van chat
ve chim » va chim, ve cham, ve chinh
nang xa » nang x, lang xa, nang ma
tuc va » thuc va, truc va, tuc xa
va dan » ca dan, va dao, va dau
tai va » thai va, mai va, tri va
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang xa hoi. hieu ((ve chim) or (((ve chat) or (va chat)))) tuc va dan tai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu ((ve chim) OR (((ve chat) OR (va chat)))) tuc va dan tai va thiet.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu ((ve chim) or (((ve chat) or (va chat)))) tuc va dan tai va thiet*.