Perhaps you should try some spelling variations:
gianh lai » gian lan
duc toan » duc tan, duc ton, duc hoan
cua viet » hoa viet, cua vat, cua dieu
duc tuan » duc thuan, duc tan, duc quan
tu sach » thu sach, su sach, te sach
ca viet » va viet, co viet, hoa viet
sach ty » sach y, sach tu, sach thu
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ty hang
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. hieu ve cham ((duc tuan) OR (duc toan)) gianh lai ((cua viet) or (ca viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. hieu ve cham ((duc tuan) OR (duc toan)) gianh lai ((cua viet) OR (ca viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang x hoi. hieu ve cham ((duc tuan) OR (duc toan)) gianh lai ((cua viet) or (ca viet))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. hieu ve cham ((duc tuan) OR (duc toan)) gianh lai ((cua viet) or (ca viet))*.