Perhaps you should try some spelling variations:
thanh loi » thanh hoa, thanh hai, thanh lap
hanh tai » thanh tai, hang tai, han tai
te sach » toc sach
sach ty » sach y, sach tu, sach thu
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
nang ma » tang ma, sang ma, nang cao
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: te sach ty ((nang ma) or (lang xa)) hoi. hieu ve cam duc tan ((thanh loi) or (hanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang ma) OR (lang xa)) hoi. hieu ve cam duc tan ((thanh loi) OR (hanh tai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang ma) or (lang xa)) hoi. hieu ve cam duc tan ((thanh loi) or (hanh tai)) cua tre*.