Perhaps you should try some spelling variations:
te sach » toc sach
cao hoi » cau hoi, co hoi, cao hoc
hieu vu » hieu va, hieu ve, hieu su
dau cua » day cua, cau cua, dan cua
y nang » ky nang, ly nang, v nang
vu cam » vu cham, vu cao, va cam
va dan » va dao, va dau, va dap
ca dan » cac dan, ca dao

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 vu cam xuc ((va dan) or (ca dan)) ((dau cua) or (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang cao hoi. hieu vu cam xuc ((va dan) OR (ca dan)) ((dau cua) OR (dai cua)) te.
• Adding a wildcard symbol may retrieve word variants: te sach y nang cao hoi. hieu vu cam xuc ((va dan) or (ca dan)) ((dau cua) or (dai cua)) te*.