Perhaps you should try some spelling variations:
sach doi » sach hoi, sach moi, sach dao
hanh noi » ha noi, hanh vi, nang noi
va hanh » van hanh, va thanh, va danh
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cua xuc » cua duc, cua tuc, cua cuc
cua tu » cua tuc, cua cu, cua te
va cua » va chua, via cua, ca cua
xuc va » duc va, tuc va, luc va
cua su » qua su

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 y) or (sach doi)) nang xa hoi. hieu va cua xuc va hanh noi ((cua tu) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach y) OR (sach doi)) nang xa hoi. hieu va cua xuc va hanh noi ((cua tu) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: tu ((sach y) or (sach doi)) nang xa hoi. hieu va cua xuc va hanh noi ((cua tu) or (cua su))*.