Perhaps you should try some spelling variations:
tay lang » tai lang, tay tang, tay quang
te sach » toc sach
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
va hang » van hang, va nang, va lang
hang di » hang doi, hang vi, hang dien
va cam » va cham, va cac, va cao
di cua » dai cua, doi cua, de 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: te sach ((ty xang) or (tay lang)) xa hoi. hieu va cam duc va hang di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty xang) OR (tay lang)) xa hoi. hieu va cam duc va hang di cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ((ty xang) or (tay lang)) xa hoi. hieu va cam duc va hang di cua te*.