Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
toc sach » hoc sach, doc sach, thuoc sach
qua pham » quan pham, quy pham, qua cham
hang tai » hang va, dung tai
hanh tai » thanh tai, han tai, hinh tai
pham duy » pham duc
nang xa » nang x, lang xa, nang ma
duy va » duy vat, duy van, day va
y nang » ky nang, ly nang, v 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: ((toc sach) or (thuat sach)) y nang xa hoi. hieu qua pham duy va ((hanh tai) or (hang tai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (thuat sach)) y nang xa hoi. hieu qua pham duy va ((hanh tai) OR (hang tai)) cua te.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (thuat sach)) y nang xa hoi. hieu qua pham duy va ((hanh tai) or (hang tai)) cua te*.