Perhaps you should try some spelling variations:
tinh van » trinh van, dinh van, tinh va
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
duc may » duc mau, duc man, duc manh
van cua » vang cua, ban cua, dan cua
ve dao » va dao, ve bao, te dao
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang xa hoi. hieu ((ve dao) OR (de dao)) duc may tinh van cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu ((ve dao) OR (de dao)) duc may tinh van cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ((ve dao) OR (de dao)) duc may tinh van cua te*.