Perhaps you should try some spelling variations:
chat truc » cau truc, chat xuc
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
van chat » cao chat
nang xa » nang x, lang xa, nang ma
truc xa » tuc xa, truc va, truoc xay
xa hanh » xa thanh, xa khanh, va hanh
y nang » ky nang, ly nang, v nang
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) OR (toc sach)) y nang xa hoi. hieu van chat truc xa hanh ((vi cua) or (di cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y nang xa hoi. hieu van chat truc xa hanh ((vi cua) OR (di cua)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) y nang xa hoi. hieu van chat truc xa hanh ((vi cua) or (di cua)) tu".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) y nang xa hoi. hieu van chat truc xa hanh ((vi cua) or (di cua)) tu*.