Perhaps you should try some spelling variations:
gianh lai » gian lan
cac truc » cau truc, cac tru, cac trung
danh lai » danh sai, dinh lam, hanh lam
su sach » so sach
vu sach » vu bach, vu khach
nang xa » nang x, lang xa, nang ma
truc va » thuc va, thuc vat, trung va
cua tre » cua te, cuu tre, cua triet

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) or (vu sach)) ky nang xa hoi. lieu va cac truc va ((danh lai) OR (gianh lai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky nang xa hoi. lieu va cac truc va ((danh lai) OR (gianh lai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ky nang xa hoi. lieu va cac truc va ((danh lai) OR (gianh lai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky nang xa hoi. lieu va cac truc va ((danh lai) OR (gianh lai)) cua tre*.