Perhaps you should try some spelling variations:
tan thanh » tran thanh, tang thanh, toan thanh
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
ve chat » van chat
va chat » van chat, va phat, cao chat
vai cua » dai cua, hai cua, lai cua
y nang » ky nang, ly nang, v nang
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 sach y nang xa hoi. hieu ((ve chat) or (va chat)) duc tan thanh ((vi cua) OR (vai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ((ve chat) OR (va chat)) duc tan thanh ((vi cua) OR (vai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu ((ve chat) or (va chat)) duc tan thanh ((vi cua) OR (vai cua)) te".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ((ve chat) or (va chat)) duc tan thanh ((vi cua) OR (vai cua)) te*.