Perhaps you should try some spelling variations:
thanh bac » nhanh bac, thanh bai, thanh san
ban thanh » ban hanh, ban hang
hoc sach » hoc sinh, hoc cac, hoc anh
lang mai » lang dai, lang hai, lang man
hieu van » hieu va, thien van, lieu va
bac cua » ban cua, tac cua, bai cua
luc ban » duc ban, cuc ban, luc bat
nam luc » nang luc, nhan luc, nam thuc
nang ma » tang ma, sang ma, nang cao
co sach » bo sach, cuon sach
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: ((hoc sach) or (co sach)) y ((nang ma) or (lang mai)) hoi. hieu van nam luc ban thanh bac cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (co sach)) y ((nang ma) OR (lang mai)) hoi. hieu van nam luc ban thanh bac cua te.
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (co sach)) y ((nang ma) or (lang mai)) hoi. hieu van nam luc ban thanh bac cua te*.