Perhaps you should try some spelling variations:
sach kem » hanh kem
lai cua » dai cua, hai cua, lai chau
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
cao tuc » dao tuc, cao duc, cao suc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve cao » va cao, ve bao, ve cac
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat ((sach kem) or (sac ky)) nang xa hoi. hieu ve cao tuc ((va hanh) OR (va danh)) lai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach kem) OR (sac ky)) nang xa hoi. hieu ve cao tuc ((va hanh) OR (va danh)) lai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((sach kem) or (sac ky)) nang xa hoi. hieu ve cao tuc ((va hanh) OR (va danh)) lai cua tu".
• Adding a wildcard symbol may retrieve word variants: thuat ((sach kem) or (sac ky)) nang xa hoi. hieu ve cao tuc ((va hanh) OR (va danh)) lai cua tu*.