Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cao cau » co cau, tao cau, ca cau
cao cap » cao chat
truc va » thuc va, thuc vat, trung va
dan dai » dat dai, can dai, dan dat
dai cuu » dai cua, dai huu
cuu tre » cua tre, cau tren, cau treo
va dan » ca dan, va dao, 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 ky nang xa hoi. hieu ((cao cau) or (cao cap)) truc va dan dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ((cao cau) OR (cao cap)) truc va dan dai cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ((cao cau) or (cao cap)) truc va dan dai cuu tre*.