Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
hieu van » hieu va, thien van, lieu va
sach ty » sach y, sach tu, sach thu
cau tre » cau tren, cau tra, cuu tre
tinh ve » trinh ve, tinh ven, dinh ve
te sach » toc sach
cam luc » cau luc
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang

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 ty nang xa hoi. hieu van ((cam luc) or (cam xuc)) may tinh ve ((cau tre) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. hieu van ((cam luc) OR (cam xuc)) may tinh ve ((cau tre) OR (cau treo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. hieu van ((cam luc) or (cam xuc)) may tinh ve ((cau tre) OR (cau treo))".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu van ((cam luc) or (cam xuc)) may tinh ve ((cau tre) OR (cau treo))*.