Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
te sach » toc sach
ty nang » ky nang, ty xang, ty hang
hieu va » lieu va, hieu qua
luu tre » luu tru, cuu tre, luy tre
va cam » va cham, va cac, va cao
vi luu » vi lua
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: ((te sach) or (thu sach)) ty nang x hoi. hieu va cam xuc ((va tinh) OR (may tinh)) vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu sach)) ty nang x hoi. hieu va cam xuc ((va tinh) OR (may tinh)) vi luu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thu sach)) ty nang x hoi. hieu va cam xuc ((va tinh) OR (may tinh)) vi luu tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thu sach)) ty nang x hoi. hieu va cam xuc ((va tinh) OR (may tinh)) vi luu tre*.