Perhaps you should try some spelling variations:
thien van » thi van
cham xuc » cam xuc, chat xuc, pham duc
nang doc » nang luc
cau tren » cu tren, dau tren, ca tren
doc hoc » duoc hoc, toc hoc, duc hoc
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
sac ky » cac ky, sai ky
va cau » van cau, va cac, va dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach y) or (sac ky)) nang doc hoc. thien van ((cham xuc) OR (cham soc)) va hanh va cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach y) OR (sac ky)) nang doc hoc. thien van ((cham xuc) OR (cham soc)) va hanh va cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach y) or (sac ky)) nang doc hoc. thien van ((cham xuc) OR (cham soc)) va hanh va cau tren".
• Adding a wildcard symbol may retrieve word variants: thu ((sach y) or (sac ky)) nang doc hoc. thien van ((cham xuc) OR (cham soc)) va hanh va cau tren*.