Perhaps you should try some spelling variations:
thieu hang » thieu khang, thieu quang, thi hang
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
tam thuc » tham thuc, am thuc, nam thuc
hanh tai » thanh tai, hang tai, han tai
su triet » su viet, su tien, ve triet
hang xa » hoang xa, hang va, hang ca
van tam » van tham, van tai, van tan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach thieu hang xa hoi. hieu van tam thuc vat ((hanh tai) or (thanh san)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach thieu hang xa hoi. hieu van tam thuc vat ((hanh tai) OR (thanh san)) su triet.
• Adding a wildcard symbol may retrieve word variants: thu sach thieu hang xa hoi. hieu van tam thuc vat ((hanh tai) or (thanh san)) su triet*.