Perhaps you should try some spelling variations:
nang khoa » hang khoa, dang khoa, nang hoa
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
khoa hoc » hoa hoc
cac xuc » cam xuc, cac nuoc, chat xuc
vai cua » dai cua, hai cua, lai cua
van anh » van thanh, tuan anh, van minh
xuc van » duc van, luc van, vuc van
hieu ve » hieu va, hieu van
tu nang » tru nang, tu nong, tu nano
ve cac » va cac, vien cac
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (hoc sach)) tu nang khoa hoc. hieu ve cac xuc van anh ((vai cua) or (di cua)) chu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) tu nang khoa hoc. hieu ve cac xuc van anh ((vai cua) OR (di cua)) chu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (hoc sach)) tu nang khoa hoc. hieu ve cac xuc van anh ((vai cua) or (di cua)) chu*".