Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
cham thuc » nham thuc, pham thuc, tham thuc
su triet » su viet, su tien, ve triet
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
thuc va » thuc vat, thuc dan, thuc day
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
hai su » hai vu, lai su, hai so

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((y nang) OR (v nang)) xa hoi. ((hieu ve) or (hieu van)) cham thuc va thanh hai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((y nang) OR (v nang)) xa hoi. ((hieu ve) OR (hieu van)) cham thuc va thanh hai su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((y nang) OR (v nang)) xa hoi. ((hieu ve) or (hieu van)) cham thuc va thanh hai su triet".
• Adding a wildcard symbol may retrieve word variants: vu sach ((y nang) OR (v nang)) xa hoi. ((hieu ve) or (hieu van)) cham thuc va thanh hai su triet*.