Perhaps you should try some spelling variations:
hanh cam » hanh cham, hanh lam, hanh nam
thi hanh » thi thanh
hanh tai » thanh tai, hang tai, han tai
dang xay » dang van, van xay
thuc dan » thuc hanh, hoc dan, thuc vat
tai cua » thai cua, tai cuc, tri cua
tu sach » thu sach, su sach, te sach
lang xa » lang ha, lang van
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach thieu ((lang xa) OR (dang xay)) hoi. thi hanh cam ((xuc va) or (thuc dan)) hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thieu ((lang xa) OR (dang xay)) hoi. thi hanh cam ((xuc va) OR (thuc dan)) hanh tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thieu ((lang xa) OR (dang xay)) hoi. thi hanh cam ((xuc va) or (thuc dan)) hanh tai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach thieu ((lang xa) OR (dang xay)) hoi. thi hanh cam ((xuc va) or (thuc dan)) hanh tai cua tre*.