Perhaps you should try some spelling variations:
tat thanh » tai thanh, ta thanh, tat thang
thanh dai » thanh hai, thanh tai, thanh dat
thu nang » thi nang, thu hang, thu bang
nam thuc » nam thuoc, am thuc, nam thu
thuc tat » thuc vat, thuc tap, thuc tai
so sach » so sanh, bo sach, co sach
qua nam » quan nam, cua nam, quang nam
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: so sach ((thu nang) or (thuc hanh)) xa hoi. hieu qua nam thuc tat thanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((thu nang) OR (thuc hanh)) xa hoi. hieu qua nam thuc tat thanh dai cua te.
• Adding a wildcard symbol may retrieve word variants: so sach ((thu nang) or (thuc hanh)) xa hoi. hieu qua nam thuc tat thanh dai cua te*.