Perhaps you should try some spelling variations:
chat phuc » thuat phuc, khac phuc, chat huu
van chat » cao chat
cua dang » cua cong, cua ban
hieu van » hieu va, thien van, lieu va
tai cua » thai cua, tai cuc, tri cua
cua dan » cua ban, ca dan
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
nang xa » lang xa, nang ma, mang xa
cua tre » cua te, cuu tre, cua triet

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) or (nang x)) hoi. hieu van chat phuc ((cua dan) OR (cua dang)) tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang xa) OR (nang x)) hoi. hieu van chat phuc ((cua dan) OR (cua dang)) tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((nang xa) or (nang x)) hoi. hieu van chat phuc ((cua dan) OR (cua dang)) tai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang xa) or (nang x)) hoi. hieu van chat phuc ((cua dan) OR (cua dang)) tai cua tre*.