Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
nang co » nang cao, nang doc, nang noi
cam tuc » cam tu, nam thuc, dam thuc
cu tren » tu tren, dua tren
y nang » ky nang, ly nang, v nang
co hoi » co hoc, co loi
va dan » ca dan, va dao, va dau
ca cu » ca cua, cua cu, ca cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang co hoi. hieu van ((cam tuc) or (cam xuc)) va dan ca cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang co hoi. hieu van ((cam tuc) OR (cam xuc)) va dan ca cu tren.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang co hoi. hieu van ((cam tuc) or (cam xuc)) va dan ca cu tren*.