Perhaps you should try some spelling variations:
sach kem » hanh kem
hieu van » hieu va, thien van, lieu va
danh doi » danh di, thanh doi, dung doi
sang xa » song xa, lang xa, sang ma
van cac » van hac, van cau, van bac
cac tac » cac toc, cac bac, cac dac
xa danh » va danh, dia danh, nam danh
doi cua » dai cua, hoi cua
sac ky » cac ky, sai ky
tac xa » tuc xa, tac da
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: su ((sach kem) or (sac ky)) sang xa hoi. hieu van cac tac xa danh doi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach kem) OR (sac ky)) sang xa hoi. hieu van cac tac xa danh doi cua tu.
• Adding a wildcard symbol may retrieve word variants: su ((sach kem) or (sac ky)) sang xa hoi. hieu van cac tac xa danh doi cua tu*.