Perhaps you should try some spelling variations:
nang cau » nang cao, hang cau, nang dau
kham xuc » kham xung, kham cuoc, cam xuc
te sach » toc sach
dau cua » day cua, cau cua, dan cua
hieu va » lieu va, hieu qua
hieu vu » hieu ve, hieu su, dieu vu
sach v » sach va, sach y, sach 2
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau
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 cau hoi. ((hieu vu) OR (hieu va)) kham xuc va dan ((dau cua) or (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang cau hoi. ((hieu vu) OR (hieu va)) kham xuc va dan ((dau cua) OR (dai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v nang cau hoi. ((hieu vu) OR (hieu va)) kham xuc va dan ((dau cua) or (dai cua)) te".
• Adding a wildcard symbol may retrieve word variants: te sach v nang cau hoi. ((hieu vu) OR (hieu va)) kham xuc va dan ((dau cua) or (dai cua)) te*.