Perhaps you should try some spelling variations:
thanh tiep » thanh hiep, thanh tien, thanh thieu
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
tiep cua » tiep can, dieu cua, tap cua
thuc day » thuc dan, thuc vat
van cau » van dau, van hau, van chat
y nang » ky nang, ly nang, may nang
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va
v nang » va nang, vu nang, van nang
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((y nang) OR (v nang)) ma hoi. hieu van cau ((xuc va) or (thuc day)) thanh tiep cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((y nang) OR (v nang)) ma hoi. hieu van cau ((xuc va) OR (thuc day)) thanh tiep cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((y nang) OR (v nang)) ma hoi. hieu van cau ((xuc va) or (thuc day)) thanh tiep cua te*".