Perhaps you should try some spelling variations:
van dinh » van minh, van dich, xuan dinh
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
va dinh » va kinh, va tinh, vu dinh
va chat » van chat, va phat, cao chat
ve chat » van chat
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
de cua » le cua, te cua, dieu 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: su sach ty nang xa hoi. hieu ((ve chat) OR (va chat)) xuc ((va dinh) or (van dinh)) de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu ((ve chat) OR (va chat)) xuc ((va dinh) OR (van dinh)) de cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. hieu ((ve chat) OR (va chat)) xuc ((va dinh) or (van dinh)) de cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu ((ve chat) OR (va chat)) xuc ((va dinh) or (van dinh)) de cua te*.