Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh vai » thanh hai, thanh van, thanh tai
thu sach » tu sach, thuat sach, thuoc sach
cham cuu » cap cuu, chat cua
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
hieu su » hieu sau, tieu su, hieu so
cua tre » cuu tre, cua triet, dua tren
y nang » ky nang, ly nang, v nang
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang xa hoi. ((hieu va) or (hieu su)) cham cuu van thanh vai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang xa hoi. ((hieu va) OR (hieu su)) cham cuu van thanh vai ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: thu sach y nang xa hoi. ((hieu va) or (hieu su)) cham cuu van thanh vai ((cua tre) or (cua te))*.