Perhaps you should try some spelling variations:
te sach » toc sach
qua ban » cua ban, qua quan
hai cua » thai cua, dai cua, hoi cua
lai cua » dai cua, lai chau, thai cua
dua ban » dia ban, cua ban, mua ban
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang

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 hoa. hieu ve cham ((dua ban) or (qua ban)) thanh ((lai cua) OR (hai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoa. hieu ve cham ((dua ban) OR (qua ban)) thanh ((lai cua) OR (hai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ma hoa. hieu ve cham ((dua ban) or (qua ban)) thanh ((lai cua) OR (hai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoa. hieu ve cham ((dua ban) or (qua ban)) thanh ((lai cua) OR (hai cua)) tre*.