Perhaps you should try some spelling variations:
nang cho » nang chon, ngang cho, nang cao
hoang de » hoang _
hoang di » hoang dai, hang di, hoang da
vu sach » vu bach, su sach, vu khach
xuc van » duc van, luc van, vuc van
su viet » so viet
cho hoc » co hoc, khoa hoc
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y nang cho hoc. hieu ((ve cam) or (va cam)) xuc van ((hoang di) OR (hoang de)) su viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang cho hoc. hieu ((ve cam) OR (va cam)) xuc van ((hoang di) OR (hoang de)) su viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y nang cho hoc. hieu ((ve cam) or (va cam)) xuc van ((hoang di) OR (hoang de)) su viet*".