Perhaps you should try some spelling variations:
hoang xa » hoang ha, hoang va, hoang xuan
hieu van » hieu va, thien van, lieu va
danh vi » hanh vi, dinh vi, danh di
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va
sach ly » sach y, sach lo, sach hay
va danh » va dinh, va dan, va hanh
vi cua » vai cua, di cua
cua te » cua tu
soc va » hoc va, loc va, doc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ly) OR (sach ty)) hoang xa hoi. ((hieu ve) or (hieu van)) cham soc va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ly) OR (sach ty)) hoang xa hoi. ((hieu ve) OR (hieu van)) cham soc va danh vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ly) OR (sach ty)) hoang xa hoi. ((hieu ve) or (hieu van)) cham soc va danh vi cua te*".