Perhaps you should try some spelling variations:
dien cuc » dien tu, dieu cua, vien cac
nang tai » hang tai, tang tai, sang tai
dien cuu » dien cu, dien cua, dien chu
te sach » toc sach
va doan » va doanh, van doan, va dan
vu kham » vu khanh
vu cham » va cham, tu cham, qua cham
tai hoi » tai khoi, dai hoi, tai hai
sach v » sach va, sach y, sach 2
soc va » hoc va, loc va, doc va
v nang » va nang, vu nang, van nang

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