Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
vien cac » vien bach, vien dai, vien da
tu sach » thu sach, su sach, te sach
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
lai cua » dai cua, hai cua, lai chau
sach ty » sach y, sach tu, sach thu
tuc va » thuc va, truc va, tuc xa
ve cac » va cac
cua te » cua tu

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