Perhaps you should try some spelling variations:
chet duoc » che duoc, cho duoc, che quoc
hieu van » hieu va, thien van, lieu va
van chet » van chat, van chuyet, van chien
duoc van » duoc va, duc van, duoc ban
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
van han » van hanh, van phan, van nhan
tai cua » thai cua, tai cuc, dai 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 ky ((nang xa) or (lang xa)) hoi. hieu van chet duoc van han ((tai cua) OR (tri cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang xa) OR (lang xa)) hoi. hieu van chet duoc van han ((tai cua) OR (tri cua)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang xa) or (lang xa)) hoi. hieu van chet duoc van han ((tai cua) OR (tri cua)) tu".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang xa) or (lang xa)) hoi. hieu van chet duoc van han ((tai cua) OR (tri cua)) tu*.