Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hang dau » hang va, hang tai
truc van » truc va, thuc van, truc ban
hoc sach » hoc sinh, hoc cac, hoc anh
nang mai » nang ma, nang tai, lang mai
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
mai hoi » mai khoi, dai hoi, lai hoi
tuc van » thuc van, tuc va, duc van
y nang » ky nang, ly nang, v nang
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 y nang mai hoi. hieu vu cham ((tuc van) or (truc van)) hang dau ((cua te) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach y nang mai hoi. hieu vu cham ((tuc van) OR (truc van)) hang dau ((cua te) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: hoc sach y nang mai hoi. hieu vu cham ((tuc van) or (truc van)) hang dau ((cua te) or (cua triet))*.