Perhaps you should try some spelling variations:
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
danh vai » danh sai, danh va, doanh van
cua viet » ca viet, hoa viet, cua vat
te sach » toc sach
hang xa » hoang xa, hang ca, lang xa
hieu va » lieu va, hieu qua
cac xuc » cam xuc, chat xuc, cac cuoc
va danh » va dinh, va dan, va hanh
vai cua » dai cua, hai cua, lai cua

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 thieu ((hang xa) or (hang va)) hoi. hieu va ((cac xuc) OR (cac nuoc)) va danh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thieu ((hang xa) OR (hang va)) hoi. hieu va ((cac xuc) OR (cac nuoc)) va danh vai cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thieu ((hang xa) or (hang va)) hoi. hieu va ((cac xuc) OR (cac nuoc)) va danh vai cua viet".
• Adding a wildcard symbol may retrieve word variants: te sach thieu ((hang xa) or (hang va)) hoi. hieu va ((cac xuc) OR (cac nuoc)) va danh vai cua viet*.