Perhaps you should try some spelling variations:
sach tai » sach bai, sach tham, sach dao
tai lang » tai cong, thi lan, tai san
thuc va » thuc vat, thuc dan, thuc day
te sach » toc sach
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
truc va » thuc vat, trung va
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua

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 tai lang xa hoi. hieu va cam ((truc va) or (thuc va)) thanh ((vi cua) or (dai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tai lang xa hoi. hieu va cam ((truc va) OR (thuc va)) thanh ((vi cua) OR (dai cua)) triet.
• Adding a wildcard symbol may retrieve word variants: te sach tai lang xa hoi. hieu va cam ((truc va) or (thuc va)) thanh ((vi cua) or (dai cua)) triet*.