Perhaps you should try some spelling variations:
cao nang » cao dang, cam nang, cao bang
cao tang » cao dang
su sach » so sach, vu sach
hanh va » hang va
xuc van » duc van, luc van, vuc van
hieu ve » hieu va, hieu van
bac hoi » bac ho, bac hoc, sach hoi
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam

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 ((cao nang) OR (cao tang)) bac hoi. hieu ve cam xuc van ((hanh va) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((cao nang) OR (cao tang)) bac hoi. hieu ve cam xuc van ((hanh va) OR (hanh vi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((cao nang) OR (cao tang)) bac hoi. hieu ve cam xuc van ((hanh va) or (hanh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ((cao nang) OR (cao tang)) bac hoi. hieu ve cam xuc van ((hanh va) or (hanh vi)) cua tre*.