Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
chat xuc » chat huu, cam xuc, chao xu
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
cac xuc » cam xuc, cac nuoc, cac cuoc
thi cuu » thi cuc, thi huu, thi cu
cuu tre » cua tre, cau tren, cau treo
va cau » van cau, va cac, va dau

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