Perhaps you should try some spelling variations:
tay lang » tai lang, tay tang, tay quang
te sach » toc sach
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
cua duc » cua tuc, cua nuoc, cua quoc
y lang » o lang, _ lang, yen lang
vi cua » vai cua, di cua
ve cac » va cac, vien cac

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 ((y lang) OR (tay lang)) xa hoi. hieu ((ve cac) or (ve cham)) thuc va hanh vi cua duc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y lang) OR (tay lang)) xa hoi. hieu ((ve cac) OR (ve cham)) thuc va hanh vi cua duc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y lang) OR (tay lang)) xa hoi. hieu ((ve cac) or (ve cham)) thuc va hanh vi cua duc".
• Adding a wildcard symbol may retrieve word variants: te sach ((y lang) OR (tay lang)) xa hoi. hieu ((ve cac) or (ve cham)) thuc va hanh vi cua duc*.