Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
tang van » dang van, hoang van, trong van
kinh ve » kinh te, dinh ve, minh ve
va kinh » va tinh, qua kinh
cam duc » cam xuc, cao duc, pham duc
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ve cua » le cua, de cua, te cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ty ((lang xa) or (tang van)) hoi. ((hieu ve) or (lieu va)) cam duc va kinh ve cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ty ((lang xa) OR (tang van)) hoi. ((hieu ve) OR (lieu va)) cam duc va kinh ve cua te.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ty ((lang xa) or (tang van)) hoi. ((hieu ve) or (lieu va)) cam duc va kinh ve cua te*.