Perhaps you should try some spelling variations:
dien cuc » dien tu, dieu cua, vien cac
kien cuc » kien thuc, kien truc, khien cua
cham hoc » cham soc, chat hoc, cham hoi
va danh » va dinh, va dan, va hanh
va cham » va chat, va tham
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
sach va » sach xa, sach ha, sach dao
sach v » sach y, sach 2, sach vay

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 v) or (sach va)) nang xa hoi. hieu va cham hoc va danh ((kien cuc) OR (dien cuc)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach v) OR (sach va)) nang xa hoi. hieu va cham hoc va danh ((kien cuc) OR (dien cuc)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach v) or (sach va)) nang xa hoi. hieu va cham hoc va danh ((kien cuc) OR (dien cuc)) te".
• Adding a wildcard symbol may retrieve word variants: te ((sach v) or (sach va)) nang xa hoi. hieu va cham hoc va danh ((kien cuc) OR (dien cuc)) te*.