Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
sach ly » sach y, sach ty, sach hay
tai cua » thai cua, tai cuc, tri cua
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
hang xa » hoang xa, hang va, hang ca
sach lo » sach dao, sach doi, sach hoi
tuc va » truc va, tuc xa, duc va
ve cam » ve cham, ve cac, va cam

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