Perhaps you should try some spelling variations:
thanh cham » thanh pham, thanh cha, hanh cham
sach tham » sach nha
tham lang » nham nang, pham hang, thai bang
hanh hai » thanh hai, nhanh hai, hang hai
hai cua » thai cua, dai cua, hoi cua
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, te sach
hoa hoi » khoa hoi, hoa hoc, hoa doi
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va
ha hoi » ha noi, xa hoi, va hoi

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 tham lang ((ha hoi) or (hoa hoi)). thi thanh cham ((luc va) or (thuc va)) hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tham lang ((ha hoi) OR (hoa hoi)). thi thanh cham ((luc va) OR (thuc va)) hanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach tham lang ((ha hoi) or (hoa hoi)). thi thanh cham ((luc va) or (thuc va)) hanh hai cua tre*.