Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van chao » van chat, van hao, van cho
su sach » vu sach
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
cam dan » cac dan, ca dan, nam dan
dan vai » dan va, dan tai, dan vat
cuu tre » cua tre, cau tren, cau treo
xu cam » xuc cam, tu cam
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: ((su sach) or (so sach)) ky nang xa hoi. hieu van chao xu cam dan vai ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang xa hoi. hieu van chao xu cam dan vai ((cuu tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky nang xa hoi. hieu van chao xu cam dan vai ((cuu tre) or (cua te))*.