Perhaps you should try some spelling variations:
te sach » toc sach
hieu ke » hieu kem, chieu ke, hieu ky
cau luc » cau truc, cau phuc
va danh » va dinh, va dan, va hanh
y nang » ly nang, v nang, may nang
ro hoi » co hoi, o hoi, mo hoi
ke cau » ket cau
luc va » duc va, tuc va, loc va
di cua » doi cua, de cua, do cua

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) OR (ky nang)) ro hoi. hieu ke cau luc va danh ((di cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ky nang)) ro hoi. hieu ke cau luc va danh ((di cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (ky nang)) ro hoi. hieu ke cau luc va danh ((di cua) or (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (ky nang)) ro hoi. hieu ke cau luc va danh ((di cua) or (dai cua)) tre*.