Perhaps you should try some spelling variations:
nang thai » nang tai, dang thai, lang thai
dua tren » dung tren
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cac xuc » cam xuc, cac nuoc, chat xuc
va nang » van nang, da nang, cam nang
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang x hoi. lieu va cac xuc va nang thai ((dua tren) or (((cua te) OR (cua tu))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. lieu va cac xuc va nang thai ((dua tren) OR (((cua te) OR (cua tu)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang x hoi. lieu va cac xuc va nang thai ((dua tren) or (((cua te) OR (cua tu))))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. lieu va cac xuc va nang thai ((dua tren) or (((cua te) OR (cua tu))))*.