Perhaps you should try some spelling variations:
chau triet » cau triet, cua triet, cau trieu
gianh lan » gian lan, gianh lai, gian dan
lan chau » lai chau, tran chau, luan chat
thu sach » thuat sach, thuoc sach, thu hoach
va gianh » va gian, van giang, va giai
hieu van » hieu va, thien van, lieu va
hoc xuc » hoc duc, hoc nuoc, hoc duoc
hoa xuc » hoa xua, hoa xu, hoa duoc
tu sach » su sach, te sach, tu cach
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) or (thu sach)) ty nang x hoi. hieu van ((hoc xuc) OR (hoa xuc)) va gianh lan chau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ty nang x hoi. hieu van ((hoc xuc) OR (hoa xuc)) va gianh lan chau triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ty nang x hoi. hieu van ((hoc xuc) OR (hoa xuc)) va gianh lan chau triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ty nang x hoi. hieu van ((hoc xuc) OR (hoa xuc)) va gianh lan chau triet*.