Perhaps you should try some spelling variations:
chua tre » chua tri, cua tre, chua trieu
te sach » toc sach
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
hanh va » hang va
y sang » duy sang
_ sang » _ san
ma hoi » mai hoi, xa hoi, ma hoa
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 ((y sang) OR (_ sang)) ma hoi. hieu ve cam duc va ((hanh va) or (hanh vi)) chua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y sang) OR (_ sang)) ma hoi. hieu ve cam duc va ((hanh va) OR (hanh vi)) chua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y sang) OR (_ sang)) ma hoi. hieu ve cam duc va ((hanh va) or (hanh vi)) chua tre*".