Perhaps you should try some spelling variations:
dat thanh » dao thanh, dat khanh, dang thanh
toc sach » hoc sach, thuoc sach, nuoc sach
da thanh » dao thanh, dam thanh, dan thanh
doc sach » hoc sach, nuoc sach, dac sac
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
va am » va lam, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (doc sach)) ky nang xa hoi. hieu va am thuc ((da thanh) or (dat thanh)) doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) ky nang xa hoi. hieu va am thuc ((da thanh) OR (dat thanh)) doi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (doc sach)) ky nang xa hoi. hieu va am thuc ((da thanh) or (dat thanh)) doi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (doc sach)) ky nang xa hoi. hieu va am thuc ((da thanh) or (dat thanh)) doi cua tre*.