Perhaps you should try some spelling variations:
dat thanh » dao thanh, dat khanh, dang thanh
bat thanh » ban thanh, bac thanh, ba thanh
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
thi nang » thi cong, ki nang, thi hanh
cac luc » cau luc, coc luc, cac nuoc
nang xa » nang x, lang xa, nang ma
vi cua » vai cua, di cua
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: ((toc sach) OR (hoc sach)) thi nang xa hoi. lieu va cac luc ((bat thanh) or (dat thanh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) thi nang xa hoi. lieu va cac luc ((bat thanh) OR (dat thanh)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (hoc sach)) thi nang xa hoi. lieu va cac luc ((bat thanh) or (dat thanh)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (hoc sach)) thi nang xa hoi. lieu va cac luc ((bat thanh) or (dat thanh)) vi cua te*.