Perhaps you should try some spelling variations:
van dinh » van minh, van dich, va dinh
vu dinh » quy dinh
sach tu » sach thu, cach tu, sach uu
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach thu, xach tay
va cam » va cham, va cac, va cao
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 tu) OR (sach ty)) nang xa hoi. hieu va cam xuc ((vu dinh) or (van dinh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tu) OR (sach ty)) nang xa hoi. hieu va cam xuc ((vu dinh) OR (van dinh)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach tu) OR (sach ty)) nang xa hoi. hieu va cam xuc ((vu dinh) or (van dinh)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: te ((sach tu) OR (sach ty)) nang xa hoi. hieu va cam xuc ((vu dinh) or (van dinh)) vi cua te*.