Perhaps you should try some spelling variations:
manh hanh » xanh hanh, danh thanh, minh thanh
hanh tai » thanh tai, hang tai, han tai
duc manh » suc manh, duc anh, duc minh
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, tu cach
tai cua » thai cua, tai cuc, tri cua
nam duc » nam duoc, pham duc, nam thuc
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
lang xa » lang ha, dang xay, lang van
te sach » toc sach

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) or (te sach)) y ((lang xa) or (nang ma)) hoi. hieu van nam duc manh hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) y ((lang xa) OR (nang ma)) hoi. hieu van nam duc manh hanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) y ((lang xa) or (nang ma)) hoi. hieu van nam duc manh hanh tai cua tre*.