Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van hang » van khang, van hoang, van thang
ve triet » va trien, su triet
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam vuc » cam xuc
vuc van » duc van, luc van, thuc van
ky lang » ky dang, ky tang, tay lang
hang ki » hang di, hang ke, hang vi
ki ve » ke ve, gi ve, vi ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ((ky lang) or (ky nang)) xa hoi. ((hieu ve) OR (hieu va)) cam vuc van hang ki ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((ky lang) OR (ky nang)) xa hoi. ((hieu ve) OR (hieu va)) cam vuc van hang ki ve triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ((ky lang) or (ky nang)) xa hoi. ((hieu ve) OR (hieu va)) cam vuc van hang ki ve triet*".