Perhaps you should try some spelling variations:
te sach » toc sach
cuc ban » cua ban, cac ban, cuu ban
nang ma » tang ma, sang ma, nang cao
dan cua » dan ca, ban cua, dai cua
hieu va » lieu va, hieu qua
dao cua » dai cua, day cua, do cua
luc ban » duc ban, luc bat, luc van
y nang » ky nang, ly nang, v nang
va cau » van cau, va cac, va dau
ma hoi » mai hoi, xa hoi, ma hoa

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 y nang ma hoi. hieu va cau ((luc ban) OR (cuc ban)) hanh ((dao cua) or (dan cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoi. hieu va cau ((luc ban) OR (cuc ban)) hanh ((dao cua) OR (dan cua)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ma hoi. hieu va cau ((luc ban) OR (cuc ban)) hanh ((dao cua) or (dan cua)) tu".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. hieu va cau ((luc ban) OR (cuc ban)) hanh ((dao cua) or (dan cua)) tu*.