Perhaps you should try some spelling variations:
tuan thuc » thuan thuc, toan thuc, tuan thu
van tuan » van quan, van ban, anh tuan
hieu van » hieu va, thien van, lieu va
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
tu ban » thu ban, te ban
vi cua » vai cua
di cua » dai cua, doi cua, de cua
tu sac » tu sach, tu cac, tu san
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (tu ban)) ky nang x hoi. hieu van tuan thuc va danh ((vi cua) OR (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu ban)) ky nang x hoi. hieu van tuan thuc va danh ((vi cua) OR (di cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu ban)) ky nang x hoi. hieu van tuan thuc va danh ((vi cua) OR (di cua)) tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu ban)) ky nang x hoi. hieu van tuan thuc va danh ((vi cua) OR (di cua)) tre*.