Perhaps you should try some spelling variations:
sach kem » hanh kem
hanh tai » thanh tai, hang tai, han tai
hanh vai » hanh vi, hanh va, hanh van
cac tuc » cac toc, cac tu, cac tac
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa
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 cac tuc va ((hanh vai) OR (hanh tai)) 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 cac tuc va ((hanh vai) OR (hanh tai)) 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 cac tuc va ((hanh vai) OR (hanh tai)) cua tu".
• Adding a wildcard symbol may retrieve word variants: thuat ((sach kem) or (sac ky)) nang xa hoi. hieu ve cac tuc va ((hanh vai) OR (hanh tai)) cua tu*.