Perhaps you should try some spelling variations:
sach kem » hanh kem
va thanh » gia thanh, ban thanh, va tinh
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va hanh » van hanh, va danh, ban hanh
va cam » va cham, va cac, va cao
de cua » le cua, te cua, dieu cua
cua te » cua tu

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 kem) or (cac ky)) nang xa hoi. hieu va cam xuc ((va hanh) OR (va thanh)) de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach kem) OR (cac ky)) nang xa hoi. hieu va cam xuc ((va hanh) OR (va thanh)) de cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach kem) or (cac ky)) nang xa hoi. hieu va cam xuc ((va hanh) OR (va thanh)) de cua te".
• Adding a wildcard symbol may retrieve word variants: tu ((sach kem) or (cac ky)) nang xa hoi. hieu va cam xuc ((va hanh) OR (va thanh)) de cua te*.