Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
nuoc ban » nuoc san, quoc ban, buoc ban
te sach » toc sach
hai cuc » tai cuc, hai cua, thai cua
hai cuu » hai cua, hai chu, thai cua
ban anh » ban hanh, ban banh, ban danh
qua cac » cua cac
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma

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 ty ((nang xa) or (lang van)) hoi. hieu qua cac nuoc ban anh ((hai cuu) OR (hai cuc)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang xa) OR (lang van)) hoi. hieu qua cac nuoc ban anh ((hai cuu) OR (hai cuc)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((nang xa) or (lang van)) hoi. hieu qua cac nuoc ban anh ((hai cuu) OR (hai cuc)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang xa) or (lang van)) hoi. hieu qua cac nuoc ban anh ((hai cuu) OR (hai cuc)) tre*.