Perhaps you should try some spelling variations:
thach thuc » thuc thuc, thanh thuy, cach thuc
van thach » van thanh, van thac, van hach
hieu van » hieu va, thien van, lieu va
vat hanh » vat thanh, van hanh, va hanh
nang xa » nang x, lang xa, nang ma
vai cua » dai cua, hai cua, lai cua
tu sac » tu sach, tu cac, tu san
tu ban » thu ban, te ban
vi cua » di cua

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 xa hoi. hieu van thach thuc vat hanh ((vi cua) OR (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu ban)) ky nang xa hoi. hieu van thach thuc vat hanh ((vi cua) OR (vai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu ban)) ky nang xa hoi. hieu van thach thuc vat hanh ((vi cua) OR (vai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu ban)) ky nang xa hoi. hieu van thach thuc vat hanh ((vi cua) OR (vai cua)) tre*.