Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
ban hanh » ban hang
cham cuu » cap cuu, chat cua
trang xa » trang va, trang ha, trong xa
hieu van » hieu va, thien van, lieu va
cam cuc » cam xuc, pham cuc
hanh di » hanh vi, hanh de, hang di
sach ky » sac ky, sach y, sach ty
tang xa » tang ma, lang xa, tang ha
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky ((tang xa) or (trang xa)) hoi. hieu van ((cam cuc) or (cham cuu)) ban hanh di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky ((tang xa) OR (trang xa)) hoi. hieu van ((cam cuc) OR (cham cuu)) ban hanh di cua tu.
• Adding a wildcard symbol may retrieve word variants: toc sach ky ((tang xa) or (trang xa)) hoi. hieu van ((cam cuc) or (cham cuu)) ban hanh di cua tu*.