Perhaps you should try some spelling variations:
nang via » nang va, nang viet, nang giao
sach tu » sach thu, sach ty, sach uu
cach tu » cach thuc
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
via cua » gia cua, gian cua, giau cua
va lao » van lao, va dao, va bao
luc va » tuc va, loc va

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 tu) or (cach tu)) lang xa hoi. hieu va lao ((luc va) OR (duc va)) nang via cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tu) OR (cach tu)) lang xa hoi. hieu va lao ((luc va) OR (duc va)) nang via cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach tu) or (cach tu)) lang xa hoi. hieu va lao ((luc va) OR (duc va)) nang via cua vat".
• Adding a wildcard symbol may retrieve word variants: te ((sach tu) or (cach tu)) lang xa hoi. hieu va lao ((luc va) OR (duc va)) nang via cua vat*.