Perhaps you should try some spelling variations:
tang tai » hang tai, dung tai, sang tao
su sach » vu sach
cac tuc » cac toc, cac tu, cac tac
hieu va » lieu va, hieu qua
hang xa » hoang xa, hang ca, lang xa
ly hang » ly quang
so sach » so sanh, bo sach, co sach
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa

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