Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
cham cua » cham cuu, ham cua, pham cua
chat cua » nhat cua, chat va, chat huu
su sach » so sach, vu sach
sach ly » sach y, sach lo, sach ty
ly hang » ly quang
hang xa » hoang xa, hang va, hang ca
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet

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 ly hang xa hoi. hieu va ((cham cua) OR (chat cua)) ban ((thanh dai) or (doanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly hang xa hoi. hieu va ((cham cua) OR (chat cua)) ban ((thanh dai) OR (doanh tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ly hang xa hoi. hieu va ((cham cua) OR (chat cua)) ban ((thanh dai) or (doanh tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ly hang xa hoi. hieu va ((cham cua) OR (chat cua)) ban ((thanh dai) or (doanh tai)) cua tre*.