Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
va dinh » van dinh, va kinh, va tinh
sach ky » sac ky, sach ty, sach kem
va cham » va chat, va tham
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ve cum » ve cua
le cua » ly cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (sach y)) lang xa hoi. hieu va cham duc va dinh ((ve cum) or (le cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach y)) lang xa hoi. hieu va cham duc va dinh ((ve cum) OR (le cua)) te.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach y)) lang xa hoi. hieu va cham duc va dinh ((ve cum) or (le cua)) te*.