Perhaps you should try some spelling variations:
tham loc » tham nuoc, cham soc, hau loc
cua tre » cua te, cua triet, dua tren
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
va tham » van tham, va cham, va thanh
tu sach » thu sach, su sach, te sach
mai hoi » mai khoi, dai hoi, lai hoi
cuu tre » cau tren, cau treo
y sang » _ sang, duy sang
loc va » hoc va, luc va
ma hoi » xa hoi, ma hoa, me 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 y sang ((ma hoi) or (mai hoi)). lieu va tham loc va danh vi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y sang ((ma hoi) OR (mai hoi)). lieu va tham loc va danh vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y sang ((ma hoi) or (mai hoi)). lieu va tham loc va danh vi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach y sang ((ma hoi) or (mai hoi)). lieu va tham loc va danh vi ((cua tre) OR (cuu tre))*.