Perhaps you should try some spelling variations:
cach phan » cach pha, mach phan, cac phan
hoc tcong » hoc cong, hoc trong, hoc thong
tcong tin » thong tin, trong tin, trong tien
sach cha » sach nha, sach che, sach ha
le nguoi » ly nguoi, lam nguoi, den nguoi
ve nguoi » va nguoi, ve nguon, ke nguoi
thu sach » tu sach, thuat sach, thuoc sach
giai hoc » dai hoc, bai hoc, thai hoc
cong tin » cong tinh, cong tan, dong tin
tu cach » tu cac
me giai » de giai, ve giai, ke giai
co cong » cao cong, cho cong, bo cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu sach cha me giai hoc tcong tin ) or ( tu cach phan ((ve nguoi) or (le nguoi)) co cong tin ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu sach cha me giai hoc tcong tin ) OR ( tu cach phan ((ve nguoi) OR (le nguoi)) co cong tin )).
• Adding a wildcard symbol may retrieve word variants: (( thu sach cha me giai hoc tcong tin ) or ( tu cach phan ((ve nguoi) or (le nguoi)) co cong tin ))*.