Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
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 dung » van dung, va duong, vat dung
y nang » ky nang, ly nang, v nang
cuc te » cua te, cuc tieu
thue » thu, thuc, thuy

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 y nang xa hoi. hieu ((van cac) or (van hac)) nuoc va dung tai ((cuc te) OR (cuc thue))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang xa hoi. hieu ((van cac) OR (van hac)) nuoc va dung tai ((cuc te) OR (cuc thue)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y nang xa hoi. hieu ((van cac) or (van hac)) nuoc va dung tai ((cuc te) OR (cuc thue))".
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang xa hoi. hieu ((van cac) or (van hac)) nuoc va dung tai ((cuc te) OR (cuc thue))*.