Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
thu lang » thu hang, thu bang, tho lang
thanh le » thinh le, thanh ve, thanh de
va thanh » gia thanh, ban thanh, va tinh
phu lang » phap lang, phu khang, phu luong
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
le cua » ly cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((thu lang) OR (phu lang)) xa hoi. hieu ((ve cam) or (ve cac)) tu va thanh le cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((thu lang) OR (phu lang)) xa hoi. hieu ((ve cam) OR (ve cac)) tu va thanh le cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((thu lang) OR (phu lang)) xa hoi. hieu ((ve cam) or (ve cac)) tu va thanh le cua vat".
• Adding a wildcard symbol may retrieve word variants: thu sach ((thu lang) OR (phu lang)) xa hoi. hieu ((ve cam) or (ve cac)) tu va thanh le cua vat*.