Perhaps you should try some spelling variations:
thien van » thi van
thu sach » tu sach, thuat sach, thuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
nang xa » nang x, lang xa, nang ma
van bac » van ban, van bao, van hac
va phan » van phan, va phat, va phap
lap cua » lai cua, lam cua, ap cua
tap cua » tap quan, tiep cua
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va

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) or (hoc sach)) y nang xa hoi. thien van bac xuc va phan ((lap cua) OR (tap cua)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (hoc sach)) y nang xa hoi. thien van bac xuc va phan ((lap cua) OR (tap cua)) viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (hoc sach)) y nang xa hoi. thien van bac xuc va phan ((lap cua) OR (tap cua)) viet*".