Perhaps you should try some spelling variations:
va thanh » ban thanh, va tinh, le thanh
thai cua » than cua, tri cua, dai cua
te sach » toc sach
cao hoi » cau hoi, co hoi, cao hoc
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao

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 y nang cao hoi. hieu va cam tuc ((va thanh) or (gia thanh)) ((thai cua) OR (tai cuc)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang cao hoi. hieu va cam tuc ((va thanh) OR (gia thanh)) ((thai cua) OR (tai cuc)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang cao hoi. hieu va cam tuc ((va thanh) or (gia thanh)) ((thai cua) OR (tai cuc)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang cao hoi. hieu va cam tuc ((va thanh) or (gia thanh)) ((thai cua) OR (tai cuc)) tre*.