Perhaps you should try some spelling variations:
dieu cua » dieu tra
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ve cham » va cham, ve chat, ve chim
vu cham » va cham, vu kham, tu cham
va tinh » may tinh
ve cua » le cua, de cua, te cua
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu ((ve cham) OR (vu cham)) duc va tinh ((ve cua) or (dieu cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. hieu ((ve cham) OR (vu cham)) duc va tinh ((ve cua) OR (dieu cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. hieu ((ve cham) OR (vu cham)) duc va tinh ((ve cua) or (dieu cua)) te".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu ((ve cham) OR (vu cham)) duc va tinh ((ve cua) or (dieu cua)) te*.