Perhaps you should try some spelling variations:
xanh hanh » danh thanh, ban hanh, van hanh
manh hanh » danh thanh, minh thanh, manh huynh
thu hang » thi hang, thuc hanh, thu huong
te sach » toc sach
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
cao suc » cao su, cao duc
hieu ve » hieu va, hieu van
ve cao » va cao, ve bao, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((thu hang) or (ty xang)) xa hoi. hieu ve cao suc ((manh hanh) or (xanh hanh)) hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((thu hang) OR (ty xang)) xa hoi. hieu ve cao suc ((manh hanh) OR (xanh hanh)) hai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((thu hang) or (ty xang)) xa hoi. hieu ve cao suc ((manh hanh) or (xanh hanh)) hai cua tre*.