Perhaps you should try some spelling variations:
sach ty » sach tu, sach thu, xach tay
tang ma » mang may, tang van
hieu va » lieu va, hieu qua
cac loc » cac lop, cac toc, cac hoc
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
loc va » hoc va, luc va
vi cuu » vi luu, vinh cuu

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) or (sach ty)) ((tang ma) or (nang cao)) hoa. hieu va cac loc va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach y) OR (sach ty)) ((tang ma) OR (nang cao)) hoa. hieu va cac loc va hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach y) or (sach ty)) ((tang ma) or (nang cao)) hoa. hieu va cac loc va hanh vi cuu tre*.