Perhaps you should try some spelling variations:
sach hay » sach han, sach ha, sach nay
hay lang » ha lang, tay lang, nhan lang
lang van » dang van, tang van, hoang van
ve triet » va trien, su triet
te sach » toc sach
hieu tu » chieu tu, hieu tuc, hien tu
tu cham » toc cham, thi cham
thuc va » thuc vat, thuc dan, thuc day
hanh ki » hanh vi, hanh ky, hanh kien
tuc va » truc va, tuc xa, duc va
ki ve » ke ve, gi ve, vi ve

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 hay lang van hoa. hieu tu cham ((tuc va) OR (thuc va)) hanh ki ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach hay lang van hoa. hieu tu cham ((tuc va) OR (thuc va)) hanh ki ve triet".
• Adding a wildcard symbol may retrieve word variants: te sach hay lang van hoa. hieu tu cham ((tuc va) OR (thuc va)) hanh ki ve triet*.