Perhaps you should try some spelling variations:
gianh lai » gian lan
va gianh » va gian, van giang, va giai
tay thai » lay thai, toc thai, y thai
te sach » toc sach
lai cua » dai cua, hai cua, lai chau
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
tay hoi » tay ho, tao hoi
ky dang » ky nang, ky danh
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: te sach ky dang ((tay hoi) or (tay thai)). hieu ve ((pham duy) OR (pham duc)) va gianh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang ((tay hoi) OR (tay thai)). hieu ve ((pham duy) OR (pham duc)) va gianh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang ((tay hoi) or (tay thai)). hieu ve ((pham duy) OR (pham duc)) va gianh lai cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang ((tay hoi) or (tay thai)). hieu ve ((pham duy) OR (pham duc)) va gianh lai cua te*.