Perhaps you should try some spelling variations:
giang van » hoang van, giang day, tang van
gian dan » gian lang
dang van » hoang van, hang va
te sach » toc sach
ca truc » cau truc, ca tru, ba truc
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
qua ca » qua cac, qua cua, qua cai
vi cua » vai cua, di 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 y ((((giang van) or (gian dan))) or (dang van)) hoa. hieu qua ca truc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((((giang van) OR (gian dan))) OR (dang van)) hoa. hieu qua ca truc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: te sach y ((((giang van) or (gian dan))) or (dang van)) hoa. hieu qua ca truc va hanh vi cua te*.