Perhaps you should try some spelling variations:
dong cua » dung cua, cong cua, huong cua
te sach » toc sach
va chat » van chat, va phat, cao chat
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
xac va » tac va, ac va, bac va
luc va » duc va, tuc va, loc va
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 thieu ((nang xa) OR (nang x)) hoi. hieu va chat ((xac va) or (luc va)) hoat dong cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thieu ((nang xa) OR (nang x)) hoi. hieu va chat ((xac va) OR (luc va)) hoat dong cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thieu ((nang xa) OR (nang x)) hoi. hieu va chat ((xac va) or (luc va)) hoat dong cua te".
• Adding a wildcard symbol may retrieve word variants: te sach thieu ((nang xa) OR (nang x)) hoi. hieu va chat ((xac va) or (luc va)) hoat dong cua te*.