Perhaps you should try some spelling variations:
truc tuan » truc quan, truc tuyen, trung tuan
hieu vien » hieu hien, hieu viec, thieu nien
da truc » dai truc, ba truc, doan truc
vien da » vien dai, hien dai
sach v » sach va, sach 2, sach vay
x hoi » xa hoi, o hoi, x ho
di su » doi su, da su, de su
ki su » ky su

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach v) or (sach y)) nang x hoi. hieu vien da truc tuan anh ((di su) or (ki su)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach v) OR (sach y)) nang x hoi. hieu vien da truc tuan anh ((di su) OR (ki su)) triet.
• Adding a wildcard symbol may retrieve word variants: su ((sach v) or (sach y)) nang x hoi. hieu vien da truc tuan anh ((di su) or (ki su)) triet*.