Perhaps you should try some spelling variations:
tham lang » nham nang, pham hang, thai bang
toc sach » hoc sach, doc sach, thuoc sach
hanh lai » hanh lam, hanh tai, thanh lap
chau tre » chay tren, chau tho, cho tre
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
va cao » va co, va dao, va bao

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 ((cam nang) or (tham lang)) xa hoi. hieu ((va cao) OR (va cac)) truc va hanh lai chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((cam nang) OR (tham lang)) xa hoi. hieu ((va cao) OR (va cac)) truc va hanh lai chau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((cam nang) or (tham lang)) xa hoi. hieu ((va cao) OR (va cac)) truc va hanh lai chau tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ((cam nang) or (tham lang)) xa hoi. hieu ((va cao) OR (va cac)) truc va hanh lai chau tre*.