Perhaps you should try some spelling variations:
toc sach » hoc sach, thuoc sach, nuoc sach
thu nang » thi nang, thu hang, thu bang
nang cho » nang chon, ngang cho, nang cao
doc sach » hoc sach, nuoc sach, dac sac
cho hoc » co hoc, khoa hoc
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
minh di » minh ai, minh de, minh tri
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (doc sach)) thu nang cho hoc. hieu ve cac xuc van ((minh di) or (minh duc)) cua cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) thu nang cho hoc. hieu ve cac xuc van ((minh di) OR (minh duc)) cua cac*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (doc sach)) thu nang cho hoc. hieu ve cac xuc van ((minh di) or (minh duc)) cua cac*".