Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
cham cua » chat cua, ham cua, pham cua
cham cuu » cap cuu, chat cua
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty hang » ly hang, ty xang, thi hang
hang xa » hoang xa, hang va, hang ca
hieu va » lieu va, hieu qua
cua tre » cuu tre, cua triet, dua tren
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 ty hang xa hoi. hieu va ((cham cua) or (cham cuu)) gia thanh dai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty hang xa hoi. hieu va ((cham cua) OR (cham cuu)) gia thanh dai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty hang xa hoi. hieu va ((cham cua) or (cham cuu)) gia thanh dai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: su sach ty hang xa hoi. hieu va ((cham cua) or (cham cuu)) gia thanh dai ((cua tre) OR (cua te))*.