Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
han tai » hang tai, nhan tai, van tai
cua tuc » cua duc, cua thuoc, luat tuc
va cau » van cau, va cac, va dau
xuc va » tuc va, luc va, xac va
cua tu » cua su, cua cu, cua te

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 ky nang xa hoi. lieu va cau ((xuc va) or (duc va)) han tai ((cua tu) OR (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. lieu va cau ((xuc va) OR (duc va)) han tai ((cua tu) OR (cua tuc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. lieu va cau ((xuc va) or (duc va)) han tai ((cua tu) OR (cua tuc))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. lieu va cau ((xuc va) or (duc va)) han tai ((cua tu) OR (cua tuc))*.