Perhaps you should try some spelling variations:
thuat sac » thuat sach, thuat san, thuat tac
chat truc » cau truc, chat xuc
danh dien » dinh dien, danh kien, danh lien
hieu van » hieu va, thien van, lieu va
van chat » cao chat
dua tren » dung tren
truc va » thuc va, thuc vat, trung va
va danh » va dinh, va dan, va hanh
cu tren » tu tren
cuu tre » cua tre, cau tren, cau treo
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sac ky nang x ho. hieu van chat truc va danh dien ((((cu tren) OR (dua tren))) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sac ky nang x ho. hieu van chat truc va danh dien ((((cu tren) OR (dua tren))) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sac ky nang x ho. hieu van chat truc va danh dien ((((cu tren) OR (dua tren))) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: thuat sac ky nang x ho. hieu van chat truc va danh dien ((((cu tren) OR (dua tren))) or (cuu tre))*.