Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
su sach » so sach, vu sach
anh tai » anh thai, vanh tai, xanh tai
cuu tre » cua tre, cau tren, cau treo
lang xa » lang ha, dang xay, lang van
sach o » sach lo, sac o, sach y
ve cai » va cai, ve cac, ve tai
o lang » hoa lang, hoi lang
va cam » va cham, va cac, va cao

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 o lang xa hoi. hieu ((ve cai) or (va cam)) duc va ((anh tai) OR (hanh tai)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach o lang xa hoi. hieu ((ve cai) OR (va cam)) duc va ((anh tai) OR (hanh tai)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach o lang xa hoi. hieu ((ve cai) or (va cam)) duc va ((anh tai) OR (hanh tai)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sach o lang xa hoi. hieu ((ve cai) or (va cam)) duc va ((anh tai) OR (hanh tai)) cuu tre*.