Perhaps you should try some spelling variations:
thien va » thien van, tien va, thien tai
cham hoc » cham soc, chat hoc, cham hoi
hanh lai » hanh lam, thanh lap, thanh loi
hanh tai » thanh tai, hang tai, han tai
va trien » va truyen, va thiet, va tuyen
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cao hoi » cau hoi, co hoi, cao hoc
va cham » va chat, va tham

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 nang cao hoi. thien va cham hoc va ((hanh lai) OR (hanh tai)) va trien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang cao hoi. thien va cham hoc va ((hanh lai) OR (hanh tai)) va trien".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang cao hoi. thien va cham hoc va ((hanh lai) OR (hanh tai)) va trien*.