Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
van cac » van cau, van bac, dan cac
van hac » van hoc, van ha, van hai
va tinh » may tinh
tinh va » tich va, trinh van, trinh vat
cua tuc » cua duc, cua thuoc, luat tuc
y nang » ky nang, ly nang, v nang
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: tu sach y nang xa hoi. hieu ((van cac) or (van hac)) nuoc va tinh va ((cua tu) OR (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ((van cac) OR (van hac)) nuoc va tinh va ((cua tu) OR (cua tuc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu ((van cac) or (van hac)) nuoc va tinh va ((cua tu) OR (cua tuc))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ((van cac) or (van hac)) nuoc va tinh va ((cua tu) OR (cua tuc))*.