Perhaps you should try some spelling variations:
te sach » toc sach
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
dinh vi » dinh ve, dinh viet, dinh tri
ve cam » ve cham, ve cac, va cam
xac va » tac va, ac va, bac va
vi cua » vai cua, di cua
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: ((te sach) or (su sach)) ky nang xa hoi. hieu ve cam ((xac va) or (duc va)) dinh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (su sach)) ky nang xa hoi. hieu ve cam ((xac va) OR (duc va)) dinh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (su sach)) ky nang xa hoi. hieu ve cam ((xac va) or (duc va)) dinh vi cua te*.