Perhaps you should try some spelling variations:
tham nuoc » thay nuoc, thoat nuoc, nha nuoc
hieu van » hieu va, thien van, lieu va
tham xuc » tham thuc, pham duc, cam xuc
va dinh » van dinh, va kinh, va tinh
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
va cau » van cau, va dau, va cao

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 ty nang xa hoi. hieu van ((tham xuc) or (tham nuoc)) va dinh ((va cau) OR (va cac)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu van ((tham xuc) OR (tham nuoc)) va dinh ((va cau) OR (va cac)) tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang xa hoi. hieu van ((tham xuc) or (tham nuoc)) va dinh ((va cau) OR (va cac)) tren*".