Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
sach thi » sach thu, sach tai, sach thieu
sach bai » sach dao, cac bai, sach xa
hieu van » hieu va, thien van, hieu ve
thanh di » thanh doi, thanh de, thanh do
nang xa » nang x, lang xa, nang ma
nam luc » nang luc, nhan luc, nam thuc
luc ban » duc ban, cuc ban, luc bat
di cua » dai cua, doi cua, de cua
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: te ((sach thi) or (sach bai)) nang xa hoi. ((hieu van) OR (lieu va)) nam luc ban thanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach thi) OR (sach bai)) nang xa hoi. ((hieu van) OR (lieu va)) nam luc ban thanh di cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach thi) or (sach bai)) nang xa hoi. ((hieu van) OR (lieu va)) nam luc ban thanh di cua te*".