Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
xa dung » xay dung, xa dong, va dung
dung co » dung cho, dung cong, dung cua
cua tre » cua te, cuu tre, cua triet
co cua » con cua, ca cua, cong cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y ((nang xa) OR (lang xa)) hoi. ((hieu ve) or (lieu va)) cam tuc xa dung co cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y ((nang xa) OR (lang xa)) hoi. ((hieu ve) OR (lieu va)) cam tuc xa dung co cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y ((nang xa) OR (lang xa)) hoi. ((hieu ve) or (lieu va)) cam tuc xa dung co cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach y ((nang xa) OR (lang xa)) hoi. ((hieu ve) or (lieu va)) cam tuc xa dung co cua tre*.