Perhaps you should try some spelling variations:
hieu hieu » hien hieu, hieu hien, thien hieu
thu sach » thuat sach, thuoc sach, thu hoach
hieu cac » hieu luc, hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
dan vai » dan va, dan tai, dan vat
cac lop » cac hop, cac loai
tu sach » su sach, tu cach, vu sach
nang xa » nang x, lang xa, nang ma
te sach » toc sach
lop va » lap va, hop va, nop va
va dan » ca dan, va dao, va dau
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: ((((tu sach) or (thu sach))) or (te sach)) ky nang xa hoi. hieu hieu cac lop va dan vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (thu sach))) OR (te sach)) ky nang xa hoi. hieu hieu cac lop va dan vai cua te.
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) or (thu sach))) or (te sach)) ky nang xa hoi. hieu hieu cac lop va dan vai cua te*.