Perhaps you should try some spelling variations:
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
dang xay » dang van, van xay
te sach » toc sach
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
cac xuc » cam xuc, chat xuc, cac cuoc
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
lang xa » lang ha, lang van
su viet » so viet
vi su » va su, ve su, ki su

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 ((lang xa) or (dang xay)) hoi. hieu va ((cac xuc) OR (cac nuoc)) va danh vi su viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((lang xa) OR (dang xay)) hoi. hieu va ((cac xuc) OR (cac nuoc)) va danh vi su viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((lang xa) or (dang xay)) hoi. hieu va ((cac xuc) OR (cac nuoc)) va danh vi su viet".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((lang xa) or (dang xay)) hoi. hieu va ((cac xuc) OR (cac nuoc)) va danh vi su viet*.