Perhaps you should try some spelling variations:
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
pham tai » pham thi, pham van
phan tai » nhan tai, phan thi, han tai
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
xuc va » duc va, tuc va, luc va
cua te » cua tu
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: ((toc sach) or (hoc sach)) ky nang x hoi. hieu van cam xuc va ((phan tai) OR (pham tai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) ky nang x hoi. hieu van cam xuc va ((phan tai) OR (pham tai)) cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) or (hoc sach)) ky nang x hoi. hieu van cam xuc va ((phan tai) OR (pham tai)) cua te*".