Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
nay lang » nam lang, tay lang, nhan lang
hac nuoc » hoc nuoc, cac nuoc, phap nuoc
hieu va » lieu va, hieu qua
tinh vi » trinh vi, tinh voi, tinh va
va tinh » may tinh
te sach » toc sach
lang xa » lang ha, dang xay, lang van
vu sach » vu bach, su sach, vu khach
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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) or (vu sach)) nay lang xa hoi. ((hieu van) OR (hieu va)) hac nuoc va tinh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (vu sach)) nay lang xa hoi. ((hieu van) OR (hieu va)) hac nuoc va tinh vi cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (vu sach)) nay lang xa hoi. ((hieu van) OR (hieu va)) hac nuoc va tinh vi cua tu".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (vu sach)) nay lang xa hoi. ((hieu van) OR (hieu va)) hac nuoc va tinh vi cua tu*.